You access WHM go to "cPHulk Brute Force Protection" and try to change the whitelist or blacklist of IPs but when accessing you get an error of either
Failed to read “whitelist”.
Failed to read “blacklist”.
Typically, this is the cphulkd Sqlite database that is corrupt and needs to be rebuilt.
Access WHM and go to "cPHulk Brute Force Protection" and disable this service.
Then do the following steps:
mv cphulk.sqlite* ./old_db/
Then go back to WHM and access "cPHulk Brute Force Protection" and enable the service again.
The issue should now be cleared.