i got the below error in react-native code, how to solve this?

Error: BUILD SUCCESSFUL in 25s

41 actionable tasks: 1 executed, 40 up-to-date

info Connecting to the development server...

info Starting the app...

Starting: Intent { cmp=com.polidea.reactnativeble/.MainActivity }

Error type 3

Error: Activity class {com.polidea.reactnativeble/com.polidea.reactnativeble.MainActivity} does not exist.

Error image link: https://ibb.co/4V8hn2H

Source Code: https://github.com/dotintent/react-native-ble-plx/blob/master/docs/README_V1.md