NOT NULL constraint failed: temp_fdroid_apk.version (code 1299) when adding my repo

Device OS and version: CalyxOS 4.3.0 (Android 13)
Device model/manufacturer: Google Pixel 3a
F-Droid version (in the About screen): 1.15.3
F-Droid privileged extension version (if installed): 0.2.12

What did you do? (clear steps if possible)

Add my repository (https://julianfairfax.gitlab.io/fdroid-repo/fdroid/repo?fingerprint=561AD800D900CA8EBF3A531C6A860B5AB8569D0D376FD121CBCCFCA9434D7DF7)

What did you expect to see?

My repository working correctly

What did you see instead?

A notification at the bottom showing NOT NULL constraint failed: temp_fdroid_apk.version (code 1299) and no apps from my repo

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