[Spacewalk-list] Cannot retrieve repository metadata (repomd.xml) for repository: epel_sci_6. Please verify its path and try again

[Konstantin Raskoshnyi]

Deployed a new machine, it didn't have internet access, added manually epel
repo & spacewalk repo and installed client, registered on the spacewalk.

The system shows this error, when I try to do anything:

Cannot retrieve repository metadata (repomd.xml) for repository:
epel_sci_6. Please verify its path and try again

If I remove software channels from this machine it shows the same error but
with the parent channel.

Any solutions?
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