Fixing the "The system failed to apply the "PHP" version" error

Symptoms

Sometimes, when updating the PHP version of a domain in "MultiPHP Manager" or running the rebuild_phpconf script, you will receive an error similar to the following.

Error #1: The system failed to apply the "PHP" version to "domain.com": Cpanel::Exception::MissingParameter/(XID 9vr3vx) Provide the "type" parameter for the "Cpanel::WebServer::Supported::apache::make_handler" function.

Description 

This error occurs when the /etc/cpanel/ea4/php.conf file is empty or plugins=1 is missing from the DNF configuration file. Disabling plugins can cause problems with system and EA4 updates on RHEL-based servers.

Workaround

1. Access the server's command line as the 'root' user via SSH or "Terminal" in WHM.
2. Open /etc/dnf/dnf.conf in your preferred text editor.
3. Ensure that the plugins value is set to 1.

   plugins=1

4. Save the changes and exit the text editor.
5. Reinstall at least one EasyApache package.

   dnf reinstall ea-php##

   Please note that "##" must be replaced with the PHP version without the decimal point (i.e., 81 for PHP 8.1).