@unman I have the same
- fedora-cisco-openh264 error
- same Unable to validate zchunk checksums error
First error is warning, but will obviously never reach repo nor update packages.
Second error I have annoying workaround of removing unreferenced files from apt-cacher-ng webgui. But is there a tweak to have files in sync? Reading documentation of apt-cacher-ng, I do not get how fetching Package list doesn’t update pointed files as of now.