GC420T Printer losing usb connection on Android

I have android app thats working connected to Zebra GC420T over USB (OTG). I used LinkOS sdk. I am able to make most part of printing that i need, but some times (about 1 of each 6 tickets printed) i get error (log in attachmment), every time this happens i lose printer connection, then i need to reestablish, in my case its really a big problem because i have application that need to be as fast as possible.. See log above: