Babcock Surgical Society paperweight

Fatal error: Uncaught Error: Call to undefined function link_to_related_exhibits() in /var/www/html/themes/seasons/items/show.php:54 Stack trace: #0 /var/www/html/application/libraries/Omeka/View.php(114): include() #1 /var/www/html/application/libraries/Zend/View/Abstract.php(888): Omeka_View->_run() #2 /var/www/html/application/libraries/Zend/Controller/Action/Helper/ViewRenderer.php(912): Zend_View_Abstract->render() #3 /var/www/html/application/libraries/Zend/Controller/Action/Helper/ViewRenderer.php(933): Zend_Controller_Action_Helper_ViewRenderer->renderScript() #4 /var/www/html/application/libraries/Zend/Controller/Action/Helper/ViewRenderer.php(972): Zend_Controller_Action_Helper_ViewRenderer->render() #5 /var/www/html/application/libraries/Zend/Controller/Action/HelperBroker.php(277): Zend_Controller_Action_Helper_ViewRenderer->postDispatch() #6 /var/www/html/application/libraries/Zend/Controller/Action.php(527): Zend_Controller_Action_HelperBroker->notifyPostDispatch() #7 /var/www/html/application/libraries/Zend/Controller/Dispatcher/Standard.php(308): Zend_Controller_Action->dispatch() #8 /var/www/html/application/libraries/Zend/Controller/Front.php(954): Zend_Controller_Dispatcher_Standard->dispatch() #9 /var/www/html/application/libraries/Zend/Application/Bootstrap/Bootstrap.php(105): Zend_Controller_Front->dispatch() #10 /var/www/html/application/libraries/Zend/Application.php(384): Zend_Application_Bootstrap_Bootstrap->run() #11 /var/www/html/application/libraries/Omeka/Application.php(73): Zend_Application->run() #12 /var/www/html/index.php(27): Omeka_Application->run() #13 {main} thrown in /var/www/html/themes/seasons/items/show.php on line 54