Android packaging warning "Duplicate zip entry"?

Development Platform & Builds Mobile
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Hey everyone!
I am working on my first mobile game for android, but I can’t figure out how to get the Google Play services and AdMob to work.
Everything has been set up on the Play Console, Google Firebase and AdMob. Everything is linked to UE4.
The app APK is released in alpha on the Play Store and Play Services in the Google Console are enabled.

I’m using the blueprint and the “Show External Login UI” node.
When I hit the button to open the Login UI the “Google Play Games” login interface pops up but immediately closes again. It’s not letting me sign in.

Nothing happens when I press my “ShowAdButton” either.

The build is successful, but I’m being spammed with warnings right at the end that’s saying “Duplicate zip entry [classes.jar:META-INF/MANIFEST.MF]”
I have asked around with these errors, but everyone is saying it’s not a problem.

Any help would be greatly appreciated!

Here are a few screenshots.

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same problem :frowning:

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me too i already had working Alpha Releases and then out of the sudden the build is successful, but i get These warnings. ad now my updates Keep crashing on Android after Splash screen! I do have the Show Login ui immediately at the beginning but it would be stupid if this is the reason. Does someone have the solution?