A Unity ID allows you to buy and/or subscribe to Unity products and services, shop in the Asset Store and participate in the Unity community.
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I cant believe they dont autocheck that...
Ok so iv'e been having this problem and i couldn't release my game on the app store until I could fix it. After 28 times having to build the dang...
Unity - Window - package Manager - advanced - reset packages to default fixed it for me.
Make sure that when you run the build that you're running the right scenes. If a corrupted scene is checked then unity will not respond