flathub: Required status check "builds/x86_64" is expected.

[Alec Leamas]

Dear list,

This is about flathub, slightly off-topic. But the discourse server is down.

I try to push my application org.opencpn.OpenCPN after an update but the 
push is rejected with message:

Required status check "builds/x86_64" is expected. Changes must be made 
through a pull request

I haven't the faintest idea what this means, and google fails me. Again, 
the few matches I get points to the discourse server.

Any hint out there?

Cheers!
--alec