App not opening after exporting to APK. Works fine with companion. (APK Crashes, Not opening)

APK is not working after installation. I took a lot of post puffs but still my issue is not solved… the app is working fine with companion but not opening after installation. i have already checked the screen title… which is not blank… even i have not imported any other extension since its working fine.
please help me…

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use logcat to find out what happens