引用transferee后，报错，sync可以，编译报错，去除transferee，可以正常编译。对应的jcenter是404.

[DragonXu96]

Execution failed for task ':app:checkDebugDuplicateClasses'.

Could not resolve all files for configuration ':app:debugRuntimeClasspath'.
Could not find library-1.0.4.jar (com.github.filippudak.progresspieview:library:1.0.4).
Searched in the following locations:
https://jcenter.bintray.com/com/github/filippudak/progresspieview/library/1.0.4/library-1.0.4.jar
Could not find exoplayer-2.10.4.jar (com.google.android.exoplayer:exoplayer:2.10.4).
Searched in the following locations:
https://jcenter.bintray.com/com/google/android/exoplayer/exoplayer/2.10.4/exoplayer-2.10.4.jar
Could not find exoplayer-ui-2.10.4.jar (com.google.android.exoplayer:exoplayer-ui:2.10.4).
Searched in the following locations:
https://jcenter.bintray.com/com/google/android/exoplayer/exoplayer-ui/2.10.4/exoplayer-ui-2.10.4.jar
Could not find extension-rtmp-2.10.4.jar (com.google.android.exoplayer:extension-rtmp:2.10.4).
Searched in the following locations:
https://jcenter.bintray.com/com/google/android/exoplayer/extension-rtmp/2.10.4/extension-rtmp-2.10.4.jar
Could not find exoplayer-hls-2.10.4.jar (com.google.android.exoplayer:exoplayer-hls:2.10.4).
Searched in the following locations:
https://jcenter.bintray.com/com/google/android/exoplayer/exoplayer-hls/2.10.4/exoplayer-hls-2.10.4.jar
Could not find exoplayer-smoothstreaming-2.10.4.jar (com.google.android.exoplayer:exoplayer-smoothstreaming:2.10.4).
Searched in the following locations:
https://jcenter.bintray.com/com/google/android/exoplayer/exoplayer-smoothstreaming/2.10.4/exoplayer-smoothstreaming-2.10.4.jar

Possible solution:

• Declare repository providing the artifact, see the documentation at https://docs.gradle.org/current/userguide/declaring_repositories.html