Description of problem:

When the Reclaim space task is run over an on_demand repository and a flatpak repository is mirrored afterwards, the pulpcore_registry endpoint stops working and returns HTTP 500.

How reproducible:

always

Is this issue a regression from an earlier version:

no it's new

Steps to Reproduce:

1. Create an on_demand repo, sync it, reclaim space from it.

2. Create a flatpak remote, scan it.

3. Mirror some repo from the flatpak remote and check the pulpcore_registry endpoint at

$SAT/pulpcore_registry/index/static?label:org.flatpak.ref:exists=1

Actual behavior:
Mirroring succeeds but the endpoint stops working after that.

Expected behavior:
Normal operation as usual.

Business Impact / Additional info:

This would be a feature blocker I guess.