Found > Task :ext_video_player:compileDebugJavaWithJavac FAILED when build apk

[jenchote]

after i would like build apk in android studio in the android folder
then it failed and said

Task :ext_video_player:compileDebugJavaWithJavac FAILED
/Users/Admin/.gradle/caches/transforms-2/files-2.1/82bf7b5f348a7a4ec0ddae5706ada0eb/jetified-exoplayer-common-2.12.1-api.jar(com/google/android/exoplayer2/util/Util.class): warning: Cannot find annotation method 'value()' in type 'EnsuresNonNull': class file for org.checkerframework.checker.nullness.qual.EnsuresNonNull not found
/Users/Admin/.gradle/caches/transforms-2/files-2.1/82bf7b5f348a7a4ec0ddae5706ada0eb/jetified-exoplayer-common-2.12.1-api.jar(com/google/android/exoplayer2/util/Util.class): warning: Cannot find annotation method 'value()' in type 'EnsuresNonNull'
error: warnings found and -Werror specified
1 error
2 warnings

ext_video_player: ^0.0.6

please guide me solution
Thanks

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