Unexpected identifier after run apk

after i build apk i got white page on default emulator
i try many emulator and then i try bluestack emulator … when i run apk i got "unexpected identifier " help me please where is the problem

Did you remote debug the problem on the device already?
Follow these instructions here to debug the problem in Safari dev tools:
https://ionic.zone/debug/remote-debug-your-app#ios
Follow these instructions here to debug the problem in Chrome dev tools:
https://ionic.zone/debug/remote-debug-your-app#android
Look at the console and network tabs for errors.