Hi,
today we had incident, where Copr failed to sign package. It started yesterday and it took us nearly one day to fix the issue.
It was caused by upgrade of gnupg2 and it tried to migrate data to new format, which failed in middle of the process.
Today we restored the data and manually migrated all 18,000 keys.

But we discovered that ~30 projects still have problems. It seems that it is project either tried to build or created project during the incident.

I will try to resolve it tomorrow.

If your project is affected, then please either wait one day, or just delete your project and create it again.

Sorry for the problems.

Mirek