On CyberPanel the disk quota for the package was reached and then increased from 10000M to 20000M
but the Disk Usage is still showing 100% usage.
This issue occurs on outdated CyberPanel installations because the IncScheduler.py script is not triggered when modifying the package. To resolve the problem, you can run the script manually:
/usr/local/CyberCP/bin/python /usr/local/CyberCP/plogical/IncScheduler.py Daily
And make sure to update CyberPanel because, on the newer versions, this is done automatically.
Source: GitHub