Internal Error: Invalid feature 'site-monitor-cpanel' after updates to version 114

Symptoms

Neither WHM nor cPanel loads, and an error similar to the following can be found in the cPanel error log.

CONFIG_TEXT: [2025-02-05 12:48:23 -0700] warn [queueprocd] Internal Error: Invalid feature 'site-monitor-cpanel' [2025-02-05 12:48:23 -0700] warn [queueprocd] Could not get driver 'site-monitor-cpanel'

Cause

This issue is caused by a leftover file at path /var/cpanel/plugins/config.json. 

Resolution

1. Access the server's command line as the 'root' user via SSH, or use the terminal at WHM Home / Server Configuration / Terminal .

2. You can use the following command to move the config.json file out of the way to a backup location.

   # mv -v /var/cpanel/plugins/config.json{,.$(date +%s)}