Gradle project refresh failed. Android Studio
Restarting Android Studio usually fixes this error for me.
You can restart android studio like this:
Click File ----> Invalidate Caches /Restart
It works for me!
Open Your Android Studio Terminal
Type command > gradlew clear press Enter
and select option in
File > Invalidate Caches / Restart...
Then press Restart button.
Now clear your app.gradle.
Thank you.