When accessing phpMyAdmin in WHM or cPanel, the below error appears:
In WHM or cPanel, phpMyAdmin is unable to be accessed if the cPanel internal PHP RPMs are corrupted. This issue can occur for other reasons, but one of the common causes is corrupted RPMs.
Repair cPanel's Internal RPMs.
Restart the cPanel service daemon.
Try accessing the phpMyAdmin once more to confirm if the issue has been resolved.