Phorum Template Error

phorum_get_template() was called with an empty page name.
This might indicate a template problem.
Here's a backtrace that might help finding the error:

#0  phorum_get_template() called at [/var/www/vhosts/farmworks.com/httpdocs/forum/common.php:1258]
#1  phorum_output() called at [/var/www/vhosts/farmworks.com/httpdocs/forum/keep_alive.php:29]