In our role as Server support specialists for web hosts, we manage web servers with various control panels and billing portals such as WHMCS, Blesta, HostBill, etc.

Blesta is a customer management, billing, and support system for web hosting providers, which is being used by many web hosts nowadays.

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Blesta has many plugins that helps to accomplish features such as support management. The plugins are usually installed under ‘[Settings] > [Company] > [Plugins]’ option, based on the requirement of the web host.

One such commonly installed plugin in Blesta is the ‘Support Manager’. It integrates a ticket system and knowledgebase to allow for clients to request support.

In Litespeed servers, Blesta sometimes give an error with this plugin, while trying to view the Support Tickets either as admin or client user. The error shown would be:

Fatal error: Class ‘SupportManagerController’ not found in /home/user/public_html/billing/plugins/support_manager/support_manager_kb_controller.php on line 11

Today we’ll see what causes this error in Litespeed and how to fix it.

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How to fix Blesta error in Litespeed

XCache is an open source cacher which is integrated with PHP to enhance the performance of PHP script execution on servers. But this cacher can cause compatibility errors with Blesta.

The error ‘Fatal error: Class ‘SupportManagerController’ not found in /home/user/public_html/billing/plugins/support_manager’ occurs in Litespeed servers due to the Xcache feature.

To verify XCache presence in PHP, it is easy, by creating a ‘phpinfo.php‘ file under your document root directory (i.e./var/www/html or /var/www) and adding the following php lines to it.

<?php
phpinfo();
?>

Getting a 503 error or PHP crashing issues can also happen due to the Xcache feature at times, as Xcache sometimes have compatibility issues with PHP.

Xcache is also reported to show compatibility issues with Blesta and hence we turn it off in the Litespeed servers to avoid the error ‘Fatal error: Class ‘SupportManagerController’ in support section.

To turn off Xcache, we disable the line containing ‘xcache.so’ in the relevant ‘php.ini’ file in the server. After the changes, we restart LSWS and the error would be gone.

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At Bobcares, our 24/7 server specialists constantly monitor all the services in the server and proactively audit the server for any errors or corruption in them.

With our systematic debugging approach for service or other software errors, we have been able to provide an exciting support experience to the customers.

If you would like to know how to avoid downtime for your customers due to errors or other service failures, we would be happy to talk to you.