自定义基座失败

[PackagePath]/app/AndroidManifest.xml Error:
uses-sdk:minSdkVersion 19 cannot be smaller than version 21 declared in library [oxPlayer.aar] /home/[Name]/.gradle/caches/transforms-2/files-2.1/dad3440ec8345a08b1425ece2a8a1f0c/oxPlayer/AndroidManifest.xml as the library might be using APIs not available in 19
Suggestion: use a compatible library with a minSdk of at most 19,
or increase this project's minSdk version to at least 21,
or use tools:overrideLibrary=\"com.dcloud.oxplayer\" to force usage (may lead to runtime failures)

FAILURE: Build failed with an exception.

• What went wrong:
  Execution failed for task ':app:processReleaseMainManifest'.

  Manifest merger failed : uses-sdk:minSdkVersion 19 cannot be smaller than version 21 declared in library [oxPlayer.aar] /home/[Name]/.gradle/caches/transforms-2/files-2.1/dad3440ec8345a08b1425ece2a8a1f0c/oxPlayer/AndroidManifest.xml as the library might be using APIs not available in 19
  Suggestion: use a compatible library with a minSdk of at most 19,
  or increase this project's minSdk version to at least 21,
  or use tools:overrideLibrary=\"com.dcloud.oxplayer\" to force usage (may lead to runtime failures)