The system failed to create the file because of the following error: Permission denied

Symptoms 

You log in to cPanel and see errors such as:

CPANEL_ERROR: The system failed to create the file “/home/username/.cpanel/datastore/.tmp.e0953.MOUNTS_CACHE__proc_mounts” with permissions “0600” (as EUID: ###, EGID: ### ###) because of the following error: Permission denied

Note: username represents the cPanel username, and ### represents the UID/GID of the user. 

Cause

The error indicates that the user's .cpanel directory or its files may have incorrect ownership.

Resolution

1. You can check the user's file list with this command.

   Note: username represents the cPanel username

   # ls -al /home/username/

2. Be sure to check directly in the .cpanel directory as well:

   # ls -al /home/username/.cpanel

You will need to review the files' ownership and ensure that the cPanel properly owns them. Changing the files' ownership can be done with the chown command in SSH or the Terminal in WHM. 

How to change ownership of a file or directory