I have a TC200J and RFD2000 device. From the zebra portal at: https://www.zebra.com/us/en/support-downloads/software/utilities/RFID-M… I downloaded the apk and installed it on the TC200J device . The RFID Manager program does not work. Connecting the device to Android Studio in Debug I see the following errors:

2018-12-22 00:58:23.963 8259-8276/? E/AndroidRuntime: FATAL EXCEPTION: AsyncTask #1    Process: com.zebra.rfid.rfidmanager, PID: 8259    java.lang.RuntimeException: An error occurred while executing doInBackground()        at android.os.AsyncTask$3.done(AsyncTask.java:325)        at java.util.concurrent.FutureTask.finishCompletion(FutureTask.java:354)        at java.util.concurrent.FutureTask.setException(FutureTask.java:223)        at java.util.concurrent.FutureTask.run(FutureTask.java:242)        at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:243)        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1133)        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:607)        at java.lang.Thread.run(Thread.java:761)     Caused by: java.lang.NullPointerException: Attempt to read from field 'long com.symbol.commserial.SerialCommConfig.baudRates' on a null object reference        at com.zebra.rfid.rfidmanager.c.a.d(Unknown Source)        at com.zebra.rfid.rfidmanager.c.a.a(Unknown Source)        at com.zebra.rfid.rfidmanager.RFIDService.b(Unknown Source)        at com.zebra.rfid.rfidmanager.RFIDService.l(Unknown Source)        at com.zebra.rfid.rfidmanager.RFIDService.e(Unknown Source)        at com.zebra.rfid.rfidmanager.RFIDService$8.a(Unknown Source)        at com.zebra.rfid.rfidmanager.RFIDService$8.doInBackground(Unknown Source)        at android.os.AsyncTask$2.call(AsyncTask.java:305)        at java.util.concurrent.FutureTask.run(FutureTask.java:237)        at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:243)         at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1133)         at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:607)         at java.lang.Thread.run(Thread.java:761)

I tried to install the Zebra_RFID_Mobile_API-2.2.7.0.apk program, but the RFD2000 reader is not recognized.
could you give me support.
Thank you