Problem #

You see the following error:

Segmentation fault

Cause #

This error does not directly relate to the WHMCS software and can occur for many different reasons. It most commonly indicates that PHP is crashing and suggests there is an issue with your PHP installation. For example, this error often occurs because the OpCache PHP extension is malfunctioning.

Troubleshooting #

Investigate your PHP configuration to find the error. You may want to use the strace utility.

To determine whether the error is due to a problem with the OpCache PHP extension, temporarily disable the OpCache PHP extension. To do this, change the system cron to use the following command:

php -q -d opcache.enable_cli=0 /path/to/whmcs/crons/cron.php

If the error does not occur again after running this command, the problem is the OpCache PHP extension.

Solution #

Make the necessary changes to resolve the issue in your PHP configuration. For example, if the error is due to the OpCache PHP extension, revert your changes and disable the OpCache PHP extension on your server.

Last modified: June 14, 2024