I can understand that there are some library files duplicate. But I am not able to locate and fix it!..
Error:Execution failed for task ':app:transformResourcesWithMergeJavaResForDebug'.
> com.android.build.api.transform.TransformException: com.android.builder.packaging.DuplicateFileException: Duplicate files copied in APK META-INF/LICENSE
File1: /root/.gradle/caches/modules-2/files-2.1/com.fasterxml.jackson.core/jackson-annotations/2.7.3/e250c11c1329c7b6b62442a9743befad78be553c/jackson-annotations-2.7.3.jar
File2: /root/.gradle/caches/modules-2/files-2.1/com.fasterxml.jackson.core/jackson-databind/2.7.2/84ffa765dd258dbab8695963c41308b054f3a1cb/jackson-databind-2.7.2.jar
File3: /root/.gradle/caches/modules-2/files-2.1/com.fasterxml.jackson.core/jackson-core/2.7.3/1499b854ae9f370409792db5af1b552dc7d9682f/jackson-core-2.7.3.jar
The path /root/.gradle/caches/mod.... is showing my gradle location on my machine. I tried of deleting it. But If I sync my project again all the three gradle files are created locally.
add this to your app build.gradle into android block
May be after this you will be notified with similar problems related to other files. Keep excluding new files until you can build