Android app loading fine in browser, failing to launch in emulator

I am beginner to the Android development. I am trying to develop an app in Android. I face problems with dependencies while integrating firebase. In stackoverflow, they suggested me to upgrade to AndroidX to solve the dependency issues. I did the same. After that, my app not working in emulator. It is working fine in browser. But, in app, after splash screen displayed, it is crashing. How can I figure out what was the problem & how to solve it?

Log file: log.txt