Generate Signed APK: Errors while building APK. You can find the errors in the 'Messages' view.

I have an Android app and I'm using the ZSDK_ANDROID_API.jar to print labels (Zebra ZD420).

Running the app works file but when trying to build a signed APK (release) I get the following build errors:

18:53 Generate Signed APK: Errors while building APK. You can find the errors in the 'Messages' view.

com.zebra.sdk.printer.internal.ProfileHelper$1: can't find superclass or interface com.fasterxml.jackson.core.type.TypeReference
com.zebra.sdk.settings.SettingsRanges$1: can't find superclass or interface com.fasterxml.jackson.core.type.TypeReference
com.zebra.sdk.settings.internal.SettingsBuilder$1: can't find superclass or interface com.fasterxml.jackson.core.type.TypeReference
com.zebra.sdk.util.internal.MultipartFileSender$1: can't find superclass or interface com.fasterxml.jackson.core.type.TypeReference
com.zebra.sdk.certificate.CertificateParser: can't find referenced class org.apache.commons.io.IOUtils
com.zebra.sdk.certificate.internal.CertUtilities: can't find referenced class org.spongycastle.jce.provider.BouncyCastleProvider
com.zebra.sdk.certificate.internal.CertUtilities: can't find referenced class org.spongycastle.util.io.pem.PemWriter
com.zebra.sdk.certificate.internal.CertUtilities: can't find referenced class org.spongycastle.openssl.jcajce.JceOpenSSLPKCS8EncryptorBuilder
com.zebra.sdk.certificate.internal.CertUtilities: can't find referenced class org.spongycastle.crypto.prng.ThreadedSeedGenerator
com.zebra.sdk.certificate.internal.CertUtilities: can't find referenced class org.spongycastle.openssl.jcajce.JceOpenSSLPKCS8EncryptorBuilder
com.zebra.sdk.certificate.internal.CertUtilities: can't find referenced class org.spongycastle.openssl.jcajce.JcaPKCS8Generator
com.zebra.sdk.certificate.internal.CertUtilities: can't find referenced class org.spongycastle.util.io.pem.PemWriter
com.zebra.sdk.certificate.internal.CertUtilities: can't find referenced class org.spongycastle.util.io.pem.PemGenerationException
com.zebra.sdk.certificate.internal.CertUtilities: can't find referenced class org.spongycastle.operator.OperatorCreationException
com.zebra.sdk.certificate.internal.CertUtilities: can't find referenced class org.spongycastle.openssl.PEMParser
com.zebra.sdk.certificate.internal.CertUtilities: can't find referenced class org.spongycastle.openssl.PEMKeyPair
com.zebra.sdk.certificate.internal.CertUtilities: can't find referenced class org.spongycastle.asn1.pkcs.PrivateKeyInfo
com.zebra.sdk.certificate.internal.CertUtilities: can't find referenced class org.spongycastle.openssl.PEMEncryptedKeyPair
com.zebra.sdk.certificate.internal.CertUtilities: can't find referenced class org.spongycastle.openssl.jcajce.JcePEMDecryptorProviderBuilder
com.zebra.sdk.certificate.internal.CertUtilities: can't find referenced class org.spongycastle.openssl.PEMEncryptedKeyPair
com.zebra.sdk.certificate.internal.CertUtilities: can't find referenced class org.spongycastle.pkcs.PKCS8EncryptedPrivateKeyInfo
com.zebra.sdk.certificate.internal.CertUtilities: can't find referenced class org.spongycastle.openssl.jcajce.JceOpenSSLPKCS8DecryptorProviderBuilder
com.zebra.sdk.certificate.internal.CertUtilities: can't find referenced class org.spongycastle.pkcs.PKCS8EncryptedPrivateKeyInfo
com.zebra.sdk.certificate.internal.CertUtilities: can't find referenced class org.spongycastle.openssl.PEMParser
com.zebra.sdk.certificate.internal.CertUtilities: can't find referenced class org.spongycastle.pkcs.PKCSException
com.zebra.sdk.certificate.internal.CertUtilities: can't find referenced class org.apache.commons.io.IOUtils
com.zebra.sdk.certificate.internal.CertUtilities: can't find referenced class org.spongycastle.cert.X509CertificateHolder
com.zebra.sdk.certificate.internal.CertUtilities: can't find referenced class org.spongycastle.cert.jcajce.JcaX509CertificateConverter
com.zebra.sdk.certificate.internal.CertUtilities: can't find referenced class org.spongycastle.jce.provider.X509CertificateObject
com.zebra.sdk.certificate.internal.CertUtilities: can't find referenced class org.apache.commons.io.IOUtils
com.zebra.sdk.certificate.internal.CertUtilities: can't find referenced class org.spongycastle.cms.CMSAlgorithm
com.zebra.sdk.certificate.internal.CertUtilities: can't find referenced class org.spongycastle.util.io.pem.PemGenerationException
com.zebra.sdk.certificate.internal.CertUtilities: can't find referenced class org.spongycastle.operator.OperatorCreationException
com.zebra.sdk.certificate.internal.CertUtilities: can't find referenced class org.spongycastle.asn1.pkcs.PrivateKeyInfo
com.zebra.sdk.certificate.internal.CertUtilities: can't find referenced class org.spongycastle.openssl.PEMParser
com.zebra.sdk.certificate.internal.CertUtilities: can't find referenced class org.spongycastle.pkcs.PKCSException
com.zebra.sdk.certificate.internal.CertUtilities: can't find referenced class org.apache.commons.io.IOUtils
com.zebra.sdk.certificate.internal.CertUtilities: can't find referenced class org.spongycastle.cms.CMSAlgorithm
com.zebra.sdk.certificate.internal.CertUtilities: can't find referenced class org.spongycastle.asn1.ASN1ObjectIdentifier
com.zebra.sdk.certificate.internal.CertUtilities: can't find referenced class org.spongycastle.asn1.pkcs.PrivateKeyInfo
com.zebra.sdk.certificate.internal.CertificateHelper: can't find referenced class org.spongycastle.openssl.PEMWriter
com.zebra.sdk.certificate.internal.CertificateHelper: can't find referenced class org.spongycastle.jce.provider.BouncyCastleProvider
com.zebra.sdk.certificate.internal.CertificateHelper: can't find referenced class org.spongycastle.cert.jcajce.JcaX509CertificateHolder
com.zebra.sdk.certificate.internal.CertificateHelper: can't find referenced class org.spongycastle.asn1.x500.style.BCStyle
com.zebra.sdk.certificate.internal.CertificateHelper: can't find referenced class org.spongycastle.asn1.x500.X500Name
com.zebra.sdk.certificate.internal.CertificateHelper: can't find referenced class org.spongycastle.asn1.x500.RDN
com.zebra.sdk.certificate.internal.CertificateHelper: can't find referenced class org.spongycastle.asn1.x500.AttributeTypeAndValue
com.zebra.sdk.certificate.internal.CertificateHelper: can't find referenced class org.spongycastle.asn1.x500.style.IETFUtils
com.zebra.sdk.certificate.internal.CertificateHelper: can't find referenced class org.spongycastle.asn1.x500.style.BCStyle
com.zebra.sdk.certificate.internal.CertificateHelper: can't find referenced class org.spongycastle.asn1.x500.X500Name
com.zebra.sdk.certificate.internal.CertificateHelper: can't find referenced class org.spongycastle.asn1.x500.RDN
com.zebra.sdk.certificate.internal.CertificateHelper: can't find referenced class org.spongycastle.asn1.x500.AttributeTypeAndValue
com.zebra.sdk.certificate.internal.CertificateHelper: can't find referenced class org.spongycastle.asn1.x500.style.IETFUtils
com.zebra.sdk.comm.internal.FTP: can't find referenced class org.apache.commons.net.ftp.FTPClient
com.zebra.sdk.comm.internal.FTP: can't find referenced class org.apache.commons.net.ftp.FTPReply
com.zebra.sdk.comm.internal.FTP: can't find referenced class org.apache.commons.net.ftp.FTPClient
com.zebra.sdk.comm.internal.FTP: can't find referenced class org.apache.commons.net.ftp.FTPFile
com.zebra.sdk.comm.internal.FTP: can't find referenced class org.apache.commons.net.ftp.FTPClient
com.zebra.sdk.comm.internal.FTP: can't find referenced class org.apache.commons.net.ftp.FTPFile
com.zebra.sdk.comm.internal.FTP: can't find referenced class org.apache.commons.net.ftp.FTPReply
com.zebra.sdk.comm.internal.FTP: can't find referenced class org.apache.commons.net.ftp.FTPFile
com.zebra.sdk.comm.internal.FTP: can't find referenced class org.apache.commons.net.ftp.FTPClient
com.zebra.sdk.comm.internal.FTP: can't find referenced class org.apache.commons.net.ftp.FTPFile
com.zebra.sdk.comm.internal.FTP: can't find referenced class org.apache.commons.net.ftp.FTPClient
com.zebra.sdk.comm.snmp.internal.Snmp: can't find referenced class uk.co.westhawk.snmp.stack.Pdu
com.zebra.sdk.comm.snmp.internal.Snmp: can't find referenced class uk.co.westhawk.snmp.stack.AsnObject
com.zebra.sdk.comm.snmp.internal.Snmp: can't find referenced class uk.co.westhawk.snmp.stack.AsnOctets
com.zebra.sdk.comm.snmp.internal.Snmp: can't find referenced class uk.co.westhawk.snmp.stack.AsnInteger
com.zebra.sdk.comm.snmp.internal.Snmp: can't find referenced class uk.co.westhawk.snmp.stack.Pdu
com.zebra.sdk.comm.snmp.internal.SnmpGet: can't find referenced class uk.co.westhawk.snmp.pdu.OneGetPdu
com.zebra.sdk.comm.snmp.internal.SnmpGetNext: can't find referenced class uk.co.westhawk.snmp.pdu.OneGetNextPdu
com.zebra.sdk.comm.snmp.internal.SnmpSet: can't find referenced class uk.co.westhawk.snmp.stack.SetPdu
com.zebra.sdk.comm.snmp.internal.SnmpSet: can't find referenced class uk.co.westhawk.snmp.stack.AsnObject
com.zebra.sdk.comm.snmp.internal.SnmpSet: can't find referenced class uk.co.westhawk.snmp.stack.SetPdu
com.zebra.sdk.comm.snmp.internal.SnmpV1: can't find referenced class uk.co.westhawk.snmp.stack.Pdu
com.zebra.sdk.comm.snmp.internal.SnmpV1: can't find referenced class uk.co.westhawk.snmp.stack.varbind
com.zebra.sdk.comm.snmp.internal.SnmpV1: can't find referenced class uk.co.westhawk.snmp.stack.SnmpContext
com.zebra.sdk.comm.snmp.internal.SnmpV1: can't find referenced class uk.co.westhawk.snmp.stack.Pdu
com.zebra.sdk.comm.snmp.internal.SnmpV1: can't find referenced class uk.co.westhawk.snmp.stack.PduException
com.zebra.sdk.comm.snmp.internal.SnmpV1: can't find referenced class uk.co.westhawk.snmp.stack.AsnObjectId
com.zebra.sdk.comm.snmp.internal.SnmpV1: can't find referenced class uk.co.westhawk.snmp.stack.SnmpContext
com.zebra.sdk.comm.snmp.internal.SnmpV1: can't find referenced class uk.co.westhawk.snmp.stack.varbind
com.zebra.sdk.comm.snmp.internal.SnmpV1: can't find referenced class uk.co.westhawk.snmp.stack.AsnObjectId
com.zebra.sdk.comm.snmp.internal.SnmpV1: can't find referenced class uk.co.westhawk.snmp.stack.PduException
com.zebra.sdk.comm.snmp.internal.SnmpV1: can't find referenced class uk.co.westhawk.snmp.stack.varbind
com.zebra.sdk.comm.snmp.internal.SnmpV1: can't find referenced class uk.co.westhawk.snmp.stack.SnmpContext
com.zebra.sdk.comm.snmp.internal.SnmpV1: can't find referenced class uk.co.westhawk.snmp.stack.Pdu
com.zebra.sdk.comm.snmp.internal.SnmpV1: can't find referenced class uk.co.westhawk.snmp.stack.SnmpContext
com.zebra.sdk.printer.CsvPrinter: can't find referenced class au.com.bytecode.opencsv.CSVReader
com.zebra.sdk.printer.PrinterAlert: can't find referenced class com.fasterxml.jackson.annotation.JsonAutoDetect$Visibility
com.zebra.sdk.printer.PrinterAlert: can't find referenced class com.fasterxml.jackson.annotation.JsonAutoDetect
com.zebra.sdk.printer.PrinterAlert: can't find referenced class com.fasterxml.jackson.annotation.JsonIgnore
com.zebra.sdk.printer.PrinterAlert: can't find referenced class com.fasterxml.jackson.annotation.JsonAutoDetect
com.zebra.sdk.printer.PrinterAlert: can't find referenced class com.fasterxml.jackson.annotation.JsonAutoDetect$Visibility
com.zebra.sdk.printer.PrinterAlert: can't find referenced class com.fasterxml.jackson.annotation.JsonIgnoreProperties
com.zebra.sdk.printer.discovery.DiscoveredPrinterNetwork: can't find referenced class org.apache.commons.lang3.builder.EqualsBuilder
com.zebra.sdk.printer.discovery.DiscoveredPrinterNetwork: can't find referenced class org.apache.commons.lang3.builder.HashCodeBuilder
com.zebra.sdk.printer.internal.FileUtilLinkOsImpl: can't find referenced class org.apache.commons.io.IOUtils
com.zebra.sdk.printer.internal.FileUtilZpl: can't find referenced class com.fasterxml.jackson.databind.ObjectMapper
com.zebra.sdk.printer.internal.FileUtilZpl: can't find referenced class com.fasterxml.jackson.databind.type.TypeFactory
com.zebra.sdk.printer.internal.FileUtilZpl: can't find referenced class com.fasterxml.jackson.databind.ObjectMapper
com.zebra.sdk.printer.internal.FileUtilZpl: can't find referenced class org.apache.commons.io.FilenameUtils
com.zebra.sdk.printer.internal.FileUtilZpl: can't find referenced class com.fasterxml.jackson.databind.ObjectMapper
com.zebra.sdk.printer.internal.FileUtilZpl: can't find referenced class com.fasterxml.jackson.databind.type.MapType
com.zebra.sdk.printer.internal.FileUtilZpl: can't find referenced class com.fasterxml.jackson.databind.ObjectMapper
com.zebra.sdk.printer.internal.FileUtilZpl: can't find referenced class com.fasterxml.jackson.databind.type.TypeFactory
com.zebra.sdk.printer.internal.FileUtilZpl: can't find referenced class org.apache.commons.io.FilenameUtils
com.zebra.sdk.printer.internal.PortStatus: can't find referenced class uk.co.westhawk.snmp.stack.Pdu
com.zebra.sdk.printer.internal.ProfileHelper: can't find referenced class com.fasterxml.jackson.databind.SerializationFeature
com.zebra.sdk.printer.internal.ProfileHelper: can't find referenced class com.fasterxml.jackson.databind.ObjectMapper
com.zebra.sdk.printer.internal.ProfileHelper: can't find referenced class com.fasterxml.jackson.core.JsonProcessingException
com.zebra.sdk.printer.internal.ProfileHelper: can't find referenced class com.fasterxml.jackson.databind.ObjectMapper
com.zebra.sdk.printer.internal.ProfileHelper: can't find referenced class com.fasterxml.jackson.core.JsonParseException
com.zebra.sdk.printer.internal.ProfileHelper: can't find referenced class com.fasterxml.jackson.databind.JsonMappingException
com.zebra.sdk.printer.internal.ProfileHelper: can't find referenced class com.fasterxml.jackson.core.JsonProcessingException
com.zebra.sdk.printer.internal.ProfileHelper: can't find referenced class com.fasterxml.jackson.core.type.TypeReference
com.zebra.sdk.printer.internal.ProfileHelper: can't find referenced class com.fasterxml.jackson.core.JsonParseException
com.zebra.sdk.printer.internal.ProfileHelper: can't find referenced class com.fasterxml.jackson.databind.JsonMappingException
com.zebra.sdk.printer.internal.ProfileHelper: can't find referenced class com.fasterxml.jackson.databind.SerializationFeature
com.zebra.sdk.printer.internal.ProfileHelper: can't find referenced class com.fasterxml.jackson.databind.ObjectMapper
com.zebra.sdk.printer.internal.ProfileHelper$1: can't find referenced class com.fasterxml.jackson.core.type.TypeReference
com.zebra.sdk.printer.internal.ProfileHelper$OurComponentDeleter: can't find referenced class org.apache.commons.io.FilenameUtils
com.zebra.sdk.printer.internal.ProfileUtilLinkOsImpl: can't find referenced class org.apache.commons.io.FilenameUtils
com.zebra.sdk.printer.internal.ZebraPrinterLinkOsImpl: can't find referenced class org.apache.commons.io.IOUtils
com.zebra.sdk.printer.operations.internal.ImageStorer: can't find referenced class org.apache.commons.io.output.ByteArrayOutputStream
com.zebra.sdk.printer.operations.internal.ImageStorer: can't find referenced class org.apache.commons.io.IOUtils
com.zebra.sdk.printer.operations.internal.ImageStorer: can't find referenced class org.apache.commons.io.output.ByteArrayOutputStream
com.zebra.sdk.printer.operations.internal.ImageStorer: can't find referenced class org.apache.commons.io.IOUtils
com.zebra.sdk.settings.AlertCondition: can't find referenced class com.fasterxml.jackson.annotation.JsonAutoDetect$Visibility
com.zebra.sdk.settings.AlertCondition: can't find referenced class com.fasterxml.jackson.annotation.JsonAutoDetect
com.zebra.sdk.settings.AlertCondition: can't find referenced class com.fasterxml.jackson.annotation.JsonAutoDetect$Visibility
com.zebra.sdk.settings.AlertCondition: can't find referenced class com.fasterxml.jackson.annotation.JsonIgnoreProperties
com.zebra.sdk.settings.AlertDestination: can't find referenced class com.fasterxml.jackson.annotation.JsonAutoDetect$Visibility
com.zebra.sdk.settings.AlertDestination: can't find referenced class com.fasterxml.jackson.annotation.JsonAutoDetect
com.zebra.sdk.settings.AlertDestination: can't find referenced class com.fasterxml.jackson.annotation.JsonIgnore
com.zebra.sdk.settings.AlertDestination: can't find referenced class com.fasterxml.jackson.annotation.JsonAutoDetect
com.zebra.sdk.settings.AlertDestination: can't find referenced class com.fasterxml.jackson.annotation.JsonAutoDetect$Visibility
com.zebra.sdk.settings.AlertDestination: can't find referenced class com.fasterxml.jackson.annotation.JsonIgnoreProperties
com.zebra.sdk.settings.Setting: can't find referenced class com.fasterxml.jackson.annotation.JsonAutoDetect$Visibility
com.zebra.sdk.settings.Setting: can't find referenced class com.fasterxml.jackson.annotation.JsonAutoDetect
com.zebra.sdk.settings.Setting: can't find referenced class com.fasterxml.jackson.annotation.JsonIgnore
com.zebra.sdk.settings.Setting: can't find referenced class com.fasterxml.jackson.annotation.JsonAutoDetect
com.zebra.sdk.settings.Setting: can't find referenced class com.fasterxml.jackson.annotation.JsonAutoDetect$Visibility
com.zebra.sdk.settings.Setting: can't find referenced class com.fasterxml.jackson.annotation.JsonIgnoreProperties
com.zebra.sdk.settings.SettingsRanges: can't find referenced class com.fasterxml.jackson.databind.ObjectMapper
com.zebra.sdk.settings.SettingsRanges: can't find referenced class com.fasterxml.jackson.core.JsonParseException
com.zebra.sdk.settings.SettingsRanges: can't find referenced class com.fasterxml.jackson.databind.JsonMappingException
com.zebra.sdk.settings.SettingsRanges: can't find referenced class com.fasterxml.jackson.core.type.TypeReference
com.zebra.sdk.settings.SettingsRanges: can't find referenced class com.fasterxml.jackson.databind.ObjectMapper
com.zebra.sdk.settings.SettingsRanges$1: can't find referenced class com.fasterxml.jackson.core.type.TypeReference
com.zebra.sdk.settings.SettingsRanges$Range: can't find referenced class com.fasterxml.jackson.annotation.JsonAutoDetect$Visibility
com.zebra.sdk.settings.SettingsRanges$Range: can't find referenced class com.fasterxml.jackson.annotation.JsonAutoDetect
com.zebra.sdk.settings.SettingsRanges$Range: can't find referenced class com.fasterxml.jackson.annotation.JsonAutoDetect$Visibility
com.zebra.sdk.settings.internal.JsonHelper: can't find referenced class com.fasterxml.jackson.databind.ObjectMapper
com.zebra.sdk.settings.internal.JsonHelper: can't find referenced class com.fasterxml.jackson.core.JsonFactory
com.zebra.sdk.settings.internal.JsonHelper: can't find referenced class com.fasterxml.jackson.databind.ObjectMapper
com.zebra.sdk.settings.internal.JsonHelper: can't find referenced class com.fasterxml.jackson.core.JsonParser
com.zebra.sdk.settings.internal.JsonHelper: can't find referenced class com.fasterxml.jackson.databind.ObjectMapper
com.zebra.sdk.settings.internal.JsonHelper: can't find referenced class com.fasterxml.jackson.core.JsonProcessingException
com.zebra.sdk.settings.internal.JsonHelper: can't find referenced class com.fasterxml.jackson.core.JsonFactory
com.zebra.sdk.settings.internal.JsonHelper: can't find referenced class com.fasterxml.jackson.databind.ObjectMapper
com.zebra.sdk.settings.internal.JsonHelper: can't find referenced class com.fasterxml.jackson.core.JsonParser
com.zebra.sdk.settings.internal.JsonHelper: can't find referenced class com.fasterxml.jackson.core.JsonProcessingException
com.zebra.sdk.settings.internal.JsonHelper: can't find referenced class com.fasterxml.jackson.core.JsonFactory
com.zebra.sdk.settings.internal.JsonHelper: can't find referenced class com.fasterxml.jackson.core.JsonParser
com.zebra.sdk.settings.internal.SettingsBuilder: can't find referenced class com.fasterxml.jackson.databind.ObjectMapper
com.zebra.sdk.settings.internal.SettingsBuilder: can't find referenced class com.fasterxml.jackson.databind.SerializationFeature
com.zebra.sdk.settings.internal.SettingsBuilder: can't find referenced class com.fasterxml.jackson.databind.ObjectMapper
com.zebra.sdk.settings.internal.SettingsBuilder: can't find referenced class com.fasterxml.jackson.core.JsonParseException
com.zebra.sdk.settings.internal.SettingsBuilder: can't find referenced class com.fasterxml.jackson.databind.JsonMappingException
com.zebra.sdk.settings.internal.SettingsBuilder: can't find referenced class com.fasterxml.jackson.core.JsonProcessingException
com.zebra.sdk.settings.internal.SettingsBuilder: can't find referenced class com.fasterxml.jackson.databind.ObjectMapper
com.zebra.sdk.settings.internal.SettingsBuilder: can't find referenced class com.fasterxml.jackson.databind.SerializationFeature
com.zebra.sdk.settings.internal.SettingsBuilder$1: can't find referenced class com.fasterxml.jackson.core.type.TypeReference
com.zebra.sdk.util.internal.CertificateSigningRequestInfo: can't find referenced class com.fasterxml.jackson.databind.ObjectMapper
com.zebra.sdk.util.internal.CertificateSigningRequestInfo: can't find referenced class com.fasterxml.jackson.databind.SerializationConfig
com.zebra.sdk.util.internal.CertificateSigningRequestInfo: can't find referenced class com.fasterxml.jackson.annotation.JsonAutoDetect$Visibility
com.zebra.sdk.util.internal.CertificateSigningRequestInfo: can't find referenced class com.fasterxml.jackson.databind.introspect.VisibilityChecker
com.zebra.sdk.util.internal.CertificateSigningRequestInfo: can't find referenced class com.fasterxml.jackson.annotation.JsonAutoDetect$Visibility
com.zebra.sdk.util.internal.CertificateSigningRequestInfo: can't find referenced class com.fasterxml.jackson.databind.introspect.VisibilityChecker
com.zebra.sdk.util.internal.CertificateSigningRequestInfo: can't find referenced class com.fasterxml.jackson.databind.ObjectMapper
com.zebra.sdk.util.internal.CertificateSigningRequestInfo: can't find referenced class com.fasterxml.jackson.databind.ObjectWriter
com.zebra.sdk.util.internal.CertificateSigningRequestInfo: can't find referenced class com.fasterxml.jackson.core.JsonProcessingException
com.zebra.sdk.util.internal.CertificateSigningRequestInfo: can't find referenced class com.fasterxml.jackson.databind.ObjectMapper
com.zebra.sdk.util.internal.CertificateSigningRequestInfo: can't find referenced class com.fasterxml.jackson.core.JsonProcessingException
com.zebra.sdk.util.internal.CertificateSigningRequestInfo: can't find referenced class com.fasterxml.jackson.databind.SerializationConfig
com.zebra.sdk.util.internal.CertificateSigningRequestInfo: can't find referenced class com.fasterxml.jackson.annotation.JsonAutoDetect$Visibility
com.zebra.sdk.util.internal.CertificateSigningRequestInfo: can't find referenced class com.fasterxml.jackson.databind.introspect.VisibilityChecker
com.zebra.sdk.util.internal.CertificateSigningRequestInfo: can't find referenced class com.fasterxml.jackson.databind.ObjectWriter
com.zebra.sdk.util.internal.CertificateSigningRequestInfo: can't find referenced class com.fasterxml.jackson.annotation.JsonAutoDetect
com.zebra.sdk.util.internal.JacksonObjectMapperFactory: can't find referenced class com.fasterxml.jackson.databind.ObjectMapper
com.zebra.sdk.util.internal.JacksonObjectMapperFactory: can't find referenced class com.fasterxml.jackson.core.JsonParser$Feature
com.zebra.sdk.util.internal.JacksonObjectMapperFactory: can't find referenced class com.fasterxml.jackson.databind.ObjectMapper
com.zebra.sdk.util.internal.JacksonObjectMapperFactory: can't find referenced class com.fasterxml.jackson.core.JsonParser$Feature
com.zebra.sdk.util.internal.JacksonObjectMapperFactory: can't find referenced class com.fasterxml.jackson.core.JsonParser
com.zebra.sdk.util.internal.JacksonObjectMapperFactory: can't find referenced class com.fasterxml.jackson.databind.ObjectMapper
com.zebra.sdk.util.internal.MpfPrinterResponse: can't find referenced class com.fasterxml.jackson.annotation.JsonAutoDetect$Visibility
com.zebra.sdk.util.internal.MpfPrinterResponse: can't find referenced class com.fasterxml.jackson.annotation.JsonAutoDetect
com.zebra.sdk.util.internal.MpfPrinterResponse: can't find referenced class com.fasterxml.jackson.annotation.JsonAutoDetect$Visibility
com.zebra.sdk.util.internal.MpfPrinterResponse: can't find referenced class com.fasterxml.jackson.annotation.JsonIgnoreProperties
com.zebra.sdk.util.internal.MultipartFileSender: can't find referenced class com.fasterxml.jackson.databind.ObjectMapper
com.zebra.sdk.util.internal.MultipartFileSender: can't find referenced class com.fasterxml.jackson.core.JsonParseException
com.zebra.sdk.util.internal.MultipartFileSender: can't find referenced class com.fasterxml.jackson.databind.JsonMappingException
com.zebra.sdk.util.internal.MultipartFileSender: can't find referenced class org.apache.http.entity.mime.MultipartEntityBuilder
com.zebra.sdk.util.internal.MultipartFileSender: can't find referenced class org.apache.http.entity.mime.HttpMultipartMode
com.zebra.sdk.util.internal.MultipartFileSender: can't find referenced class org.apache.http.entity.mime.MultipartEntityBuilder
com.zebra.sdk.util.internal.MultipartFileSender: can't find referenced class org.apache.http.entity.mime.content.InputStreamBody
com.zebra.sdk.util.internal.MultipartFileSender: can't find referenced class org.apache.http.entity.mime.MultipartEntityBuilder
com.zebra.sdk.util.internal.MultipartFileSender: can't find referenced class com.fasterxml.jackson.core.type.TypeReference
com.zebra.sdk.util.internal.MultipartFileSender: can't find referenced class com.fasterxml.jackson.core.JsonParseException
com.zebra.sdk.util.internal.MultipartFileSender: can't find referenced class com.fasterxml.jackson.databind.JsonMappingException
com.zebra.sdk.util.internal.MultipartFileSender: can't find referenced class org.apache.http.entity.mime.MultipartEntityBuilder
com.zebra.sdk.util.internal.MultipartFileSender: can't find referenced class com.fasterxml.jackson.databind.ObjectMapper
com.zebra.sdk.util.internal.MultipartFileSender: can't find referenced class org.apache.http.entity.mime.MultipartEntityBuilder
com.zebra.sdk.util.internal.MultipartFileSender: can't find referenced class org.apache.http.entity.mime.HttpMultipartMode
com.zebra.sdk.util.internal.MultipartFileSender$1: can't find referenced class com.fasterxml.jackson.core.type.TypeReference
com.zebra.sdk.util.internal.StringUtilities: can't find referenced class com.fasterxml.jackson.databind.type.TypeFactory
com.zebra.sdk.util.internal.StringUtilities: can't find referenced class com.fasterxml.jackson.databind.ObjectMapper
com.zebra.sdk.util.internal.StringUtilities: can't find referenced class com.fasterxml.jackson.databind.type.MapType
com.zebra.sdk.util.internal.StringUtilities: can't find referenced class com.fasterxml.jackson.databind.ObjectMapper
com.zebra.sdk.util.internal.StringUtilities: can't find referenced class com.fasterxml.jackson.databind.type.TypeFactory
com.zebra.sdk.util.internal.ZPLUtilities: can't find referenced class com.fasterxml.jackson.databind.ObjectMapper
com.zebra.sdk.util.internal.ZPLUtilities: can't find referenced class com.fasterxml.jackson.databind.type.TypeFactory
com.zebra.sdk.util.internal.ZPLUtilities: can't find referenced class com.fasterxml.jackson.databind.ObjectMapper
com.zebra.sdk.util.internal.ZPLUtilities: can't find referenced class com.fasterxml.jackson.databind.type.MapType
com.zebra.sdk.util.internal.ZPLUtilities: can't find referenced class com.fasterxml.jackson.databind.ObjectMapper
com.zebra.sdk.util.internal.ZPLUtilities: can't find referenced class com.fasterxml.jackson.databind.type.TypeFactory
com.zebra.sdk.weblink.WeblinkConfigurator: can't find referenced class org.apache.commons.validator.routines.UrlValidator
com.zebra.sdk.weblink.WeblinkConfigurator: can't find referenced class org.apache.commons.validator.routines.RegexValidator
com.zebra.sdk.weblink.WeblinkConfigurator: can't find referenced class org.apache.commons.validator.routines.UrlValidator
there were 370 unresolved references to classes or interfaces.
Exception while processing task java.io.IOException: Please correct the above warnings first.

This is my app gradle file:

buildscript {

    repositories {

        maven { url 'https://maven.fabric.io/public' }

    }

    dependencies {

        classpath 'io.fabric.tools:gradle:1.+'

    }

}

apply plugin: 'com.android.application'

apply plugin: 'io.fabric'

android {

    compileSdkVersion 27

    buildToolsVersion '27.0.3'

    defaultConfig {

        applicationId "..."

        minSdkVersion 21

        targetSdkVersion 27

        versionCode code

        versionName "1.3.3"

        testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"

    }

    buildTypes {

        release {

            shrinkResources true

            minifyEnabled true

            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'

            signingConfig signingConfigs.config

        }

    }

    // Specifies flavor dimensions.

    flavorDimensions "full"

    packagingOptions {

        exclude 'META-INF/LICENSE.txt'

        exclude 'META-INF/NOTICE.txt'

        exclude 'META-INF/NOTICE'

        exclude 'META-INF/LICENSE'

        exclude 'META-INF/DEPENDENCIES'

    }

}

repositories {

    flatDir {

        dirs 'libs'

    }

    maven { url "https://maven.google.com" }

    maven { url 'https://maven.fabric.io/public' }

}

dependencies {

    androidTestImplementation('com.android.support.test.espresso:espresso-core:2.2.2', {

        exclude group: 'com.android.support', module: 'support-annotations'

    })

    implementation fileTree(include: ['*.jar'], dir: 'libs')

    implementation 'com.android.support:appcompat-v7:27.1.1'

    implementation 'com.android.support:support-v4:27.1.1'

    implementation 'com.android.support:design:27.1.1'

    implementation 'com.android.support:cardview-v7:27.1.1'

    implementation 'com.android.support.constraint:constraint-layout:1.1.0'

    ...

    testImplementation 'junit:junit:4.12'

    annotationProcessor 'com.github.bumptech.glide:compiler:4.2.0'

    debugImplementation 'com.squareup.leakcanary:leakcanary-android:1.5.4'

    releaseImplementation 'com.squareup.leakcanary:leakcanary-android-no-op:1.5.4'

    implementation files('libs/ZSDK_ANDROID_API.jar')

}

What am I doing wrong?