App Store Connect Error When Uploading to Apple

I am trying to notarize a Mac app on Xcode 12.2. I archive the app, open the Organizer, select the archive and click the Distribute App button.

I go through the steps in the wizard. Everything goes well until I click the Upload button to upload the app to Apple to notarize. When I click the Upload button, I get the following error:

App Store Connect Operation Error
Could not find or load main class

Followed by a path to the Library.Java.Extensions folder on my Mac.

I have tried cleaning the build folder and creating a fresh archive, but the upload error persists. How do I fix this error?


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The upload error went away when I updated to Xcode 13.

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szymczyk
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Some people have reported solving this problem by changing the name of the Xcode executable. It may be related to having one or more beta versions installed. Personally I think it would be better to look at "xcode-select" first.
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Etresoft
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My Xcode executable is named Xcode. I do not have any beta Xcode versions installed on my Mac. The active developer directory from Xcode-select is the following:

/Applications/Xcode.app/Contents/Developer

I'm running macOS 10.15.7.
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szymczyk
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The upload error went away when I updated to Xcode 13.

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szymczyk
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