XF 1.4 I have a ErrorException

Can someone tell me whats going on here and help me fix it. Thanks.

ErrorException: Fatal Error: Uncaught TypeError: Argument 1 passed to XenForo_Application::handleException() must be an instance of Exception, instance of Error given in /home/mono/public_html/library/XenForo/Application.php:375 Stack trace: #0 [internal function]: XenForo_Application::handleException(Object(Error)) #1 {main} thrown - library/XenForo/Application.php:375


XenForo developer
Staff member
You appear to be using PHP7. This isn't supported in the 1.4 release you're running.

I would recommend upgrading to 1.5.16.