Hello,

I just found out that Guix QA returns a plain Guile error message when I
try to open an issue that was merged:
  https://qa.guix.gnu.org/issue/69654

The error looks like this:
--8<---------------cut here---------------start------------->8---
An error occurred

Sorry about that!
wrong-type-arg

#fWrong type to apply: ~S#f#f
--8<---------------cut here---------------end--------------->8---

Please find a screenshot of the error attached.

I suppose that the service should return something more meaningful than
that.

Thanks,
- avp