'After migration of this old project I'm getting this error and I have tried a lot of ways
FAILURE: Build failed with an exception.
- What went wrong: Execution failed for task ':app:checkDebugDuplicateClasses'.
A failure occurred while executing com.android.build.gradle.internal.tasks.CheckDuplicatesRunnable Duplicate class com.google.android.exoplayer2.ui.DownloadNotificationHelper found in modules jetified-exoplayer-core-2.17.0-runtime (com.google.android.exoplayer:exoplayer-core:2.17.0) and jetified-exoplayer-ui-2.15.1-runtime (com.google.android.exoplayer:exoplayer-ui:2.15.1)
Go to the documentation to learn how to <a href="d.android.com/r/tools/classpath-sync-errors">Fix dependency resolution errors</a>.
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
BUILD FAILED in 2m 52s Exception: Gradle task assembleDebug failed with exit code 1
The old project after migration shows this.
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Source: Stack Overflow
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