Plesk or system updates fail: [Errno 256] No more mirrors to try

Symptoms

Plesk or system updates fail with the following error message:

PLESK_ERROR:ERROR: failure: repodata/413b49dd7c2fb6fa878a47226e1600-primary.sqlite.bz2 from PLESK_18_0_44-extras:
[Errno 256] No more mirrors to try.
dist-rpm-CentOS-7-x86_64/repodata/413b49dd7c2fb6fa878a47226e1600-primary.sqlite.bz2: [Errno 14] HTTP Error 404 - Not Found

Cause

Yum cache contains information about old/disabled repositories.

Resolution

1. Connect to the server via SSH.

2. Clean up the yum cache:

   # yum clean all

3. Recreate the yum cache:

   # yum makecache

4. Re-run Plesk and/or system updates.