What is Null App APK and Why You Need It

I added SerializedName annotation to all fields in my version of UserInfoResponse class as suggested in Retrofit 2 returns null in release APK when minifyenable but ok in debug APK. Still did not solve the problem.

null apk

Thank you for the tip. When I install through adb I get the following error message:Failure [INSTALL_PARSE_FAILED_NO_CERTIFICATES: Failed to collect certificates from /data/app/vmdl1028936773.tmp/base.apk: Attempt to get length of null array]After some searching, this provided an answer: -installation-fails

@GForce said:Thank you for the tip. When I install through adb I get the following error message:Failure [INSTALL_PARSE_FAILED_NO_CERTIFICATES: Failed to collect certificates from /data/app/vmdl1028936773.tmp/base.apk: Attempt to get length of null array]After some searching, this provided an answer: -installation-fails

Run): Could not install to device adb: failed to install C/Users/ASUS/AppData/Local/Godot/tmpexport.1682588311.aple Failure INSTALL PARSE FAILED NO CERTIFICATES: Failed to collect certificates from /data/app/vmd1222659536.tmp/base-apic Attempt to get length of null arrity]