Warning: This version only understands SDK XML versions up to 3 but an SDK XML file of version 4 was encountered. This can happen if you use versions of Android Studio and the command-line tools that were released at different times.+

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If you are using Android SDK 34 change the "Android SDK Build Tools" from 35 to 34.

You can simply go to Android Studio Settings --> Language and Frameworks --> Android SDK --> SDK Tools tab and tick "Show package details" in the bottom.

Then untick 35 and tick 34.

Apply and OK.