running 'details' task for a mod fails with error im [ExitPromptError]: User force closed the prompt with 0 null

[hgschmie]

I run the 'details' talk from 'terminal' -> 'run task...'. This is my 'info.json' file:

[...]
  "package": {
    "git_publish_branch": "main",
    "readme": "README.md",
    "gallery": [ ".portal/screenshot-1.png", ".portal/screenshot-2.png", ".portal/screenshot-3.png" ],
    "sync_portal_details": true
  }
}

the README.md and the screenshots obviously exist.

I see this in the vscode console:

Not sure what to do with this. This task works for me for some mods but fails for others. Uploading release packages works reliably.