An HTTP 500 Internal Server error will occur for the /livehelp/include/settings.php file when the Smarty template framework is unable to create and store the compiled Smarty template files within the /livehelp/templates_c/ directory.

To resolve this error, please update the permissions of the /livehelp/templates_c/ folder to be writable. You can also check Documentation РBlank Live Chat Window Issue for further instructions.