Can't publish anymore

I started a new website which is only 65 MB small. I published it once before on disk, added a lot of stuff since then, wanted to update my published version, but now Sparkle quits immediately when I click Publish and even when I go to the settings to check my publishing settings.
Mac Pro, 10.14.6, Sparkle 5.0.3

Sorry, I didn’t see a similar post that didn’t show up in the search.
I just sent you an e-mail and the sparkle file via wetransfer. Hope both arrive :blush: