Keeping up with the Joneses

Fatal error: Uncaught Error: Call to undefined function exhibit_builder_get_page_item() in /home/dhmsudom/courses.dh.msu.domains/al340s17/themes/avantgarde/exhibit-builder/exhibits/show.php:37 Stack trace: #0 /home/dhmsudom/courses.dh.msu.domains/al340s17/application/libraries/Omeka/View.php(114): include() #1 /home/dhmsudom/courses.dh.msu.domains/al340s17/application/libraries/Zend/View/Abstract.php(888): Omeka_View->_run('/home/dhmsudom/...') #2 /home/dhmsudom/courses.dh.msu.domains/al340s17/application/libraries/Zend/Controller/Action/Helper/ViewRenderer.php(912): Zend_View_Abstract->render(NULL) #3 /home/dhmsudom/courses.dh.msu.domains/al340s17/application/libraries/Zend/Controller/Action/Helper/ViewRenderer.php(933): Zend_Controller_Action_Helper_ViewRenderer->renderScript('exhibits/show.p...', NULL) #4 /home/dhmsudom/courses.dh.msu.domains/al340s17/application/libraries/Zend/Controller/Action/Helper/ViewRenderer.php(972): Zend_Controller_Action_Helper_ViewRenderer->render() #5 /home/dhmsudom/courses.dh.msu.domains/al340s17/application/libraries/Zend/Controller/Action/HelperBroker.php(277): Zend_Controller_Action_Helper_ViewRenderer->postDispatch() #6 /home/dhmsudom/courses.dh.msu.domains/al340s17/application/libraries/Zend/Controller/Action.php(527): Zend_Controller_Action_HelperBroker->notifyPostDispatch() #7 /home/dhmsudom/courses.dh.msu.domains/al340s17/application/libraries/Zend/Controller/Dispatcher/Standard.php(308): Zend_Controller_Action->dispatch('showAction') #8 /home/dhmsudom/courses.dh.msu.domains/al340s17/application/libraries/Zend/Controller/Front.php(954): Zend_Controller_Dispatcher_Standard->dispatch(Object(Zend_Controller_Request_Http), Object(Zend_Controller_Response_Http)) #9 /home/dhmsudom/courses.dh.msu.domains/al340s17/application/libraries/Zend/Application/Bootstrap/Bootstrap.php(105): Zend_Controller_Front->dispatch() #10 /home/dhmsudom/courses.dh.msu.domains/al340s17/application/libraries/Zend/Application.php(384): Zend_Application_Bootstrap_Bootstrap->run() #11 /home/dhmsudom/courses.dh.msu.domains/al340s17/application/libraries/Omeka/Application.php(73): Zend_Application->run() #12 /home/dhmsudom/courses.dh.msu.domains/al340s17/index.php(23): Omeka_Application->run() #13 {main} thrown in /home/dhmsudom/courses.dh.msu.domains/al340s17/themes/avantgarde/exhibit-builder/exhibits/show.php on line 37