Error:Execution Failed for Task ':App:Transformresourceswithmergejavaresfordebug'

Error:Execution failed for task ':app:transformResourcesWithMergeJavaResForDebug'

As the error message suggests you are not excluding the META-INF/LICENSE file which exists in more than one of your dependencies

com.android.build.api.transform.TransformException: com.android.builder.packaging.DuplicateFileException: Duplicate files copied in APK META-INF/LICENSE

packagingOptions {
    exclude 'META-INF/NOTICE' // will not include NOTICE file
    exclude 'META-INF/LICENSE' // will not include LICENSE file
    // as noted by @Vishnuvathsan you may also need to include
    // variations on the file name. It depends on your dependencies.
    // Some other common variations on notice and license file names
    exclude 'META-INF/notice'
    exclude 'META-INF/notice.txt'
    exclude 'META-INF/license'
    exclude 'META-INF/license.txt'
}

Error:Execution failed for task ':app:transformClassesWithInstantRunSlicerForDebug'. java.io.IOException:

:app:transformClassesWithInstantRunSlicerForDebug'.
java.io.IOException: Failed to delete

-- try to clean project and rebuild project.

From @Kael: A clean is performed via Build -> Clean Project or Build -> Rebuild Project.

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