ModSecurity: collection_store: Failed to access DBM file "/var/cpanel/secdatadir/nobody-ip": Permission denied

Symptoms

A website displays a 404 error, and the Apache error log contains entries similar to the following.

[Tue May 11 15:44:38.561822 2023] [:error] [pid 20309] [client 203.0.113.2:43002] [client 203.0.113.2] ModSecurity: collection_store: Failed to access DBM file "/var/cpanel/secdatadir/nobody-ip": Permission denied [hostname "domain.tld"] [uri "/wp-login.php"] [unique_id "Y0XHpIRi00JuFfueZ9KdngARAAk"]

Description 

The 404 error occurs when ModSecurity is unable to access the DBM files.

Workaround

1. Access the server's command line as the 'root' user via SSH or "Terminal" in WHM.
2. Then run the following command.

   chown nobody:nobody /var/cpanel/secdatadir/*\.{dir,pag}