What went wrong:
A problem occurred evaluating project ':geolocator_android'.
Could not get unknown property 'flutter' for extension 'android' of type com.android.build.gradle.LibraryExtension.
Try:
Run with --stacktrace option to get the stack trace.
Run with --info or --debug option to get more log output.Run with --scan to get full insights.
Get more help at https://help.gradle.org.
==============================================================================
2: Task failed with an exception.
-----------
What went wrong:
A problem occurred configuring project ':geolocator_android'.
Failed to notify project evaluation listener.
Cannot invoke method substring() on null object
compileSdkVersion is not specified. Please add it to build.gradle