upcp reports an error that a new Apache configuration fails due to mod_security rules.

Symptoms

During an upcp update, an error occurs when mod_security rules are removed but are still configured as existing. The error will look something like this. The vendor name could be different. In this case, the vendor name is comodo_litespeed.

"The system could not restore the original configuration: The system could not validate the new Apache configuration because httpd exited with a nonzero value. Apache produced the following error: httpd_ls_bak: Syntax error on line 274 of /etc/apache2/conf/httpd.conf: Syntax error on line 32 of /etc/apache2/conf.d/modsec2.conf: Syntax error on line 28 of /etc/apache2/conf.d/modsec/modsec2.cpanel.conf: Could not open configuration file /etc/apache2/conf.d/modsec_vendor_configs/comodo_litespeed/00_Init_Initialization.conf: No such file or directory" 

Workaround

The first thing to do here is to log into WHM and go to "ModSecurity™ Vendors" and note the current vendor(s) and rules enabled.

Then these two files need to be moved:

mv -v /var/cpanel/modsec_cpanel_conf_datastore{,.original_backup} 
mv -v /var/cpanel/modsec_cpanel_conf_datastore.cache{,.original_backup}

Next, go back to WHM and enable the vendor(s) and rules again under "ModSecurity™ Vendors".