Omeka has encountered an error

InvalidArgumentException

Invalid record passed to recordMetadata.

InvalidArgumentException: Invalid record passed to recordMetadata. in /home/dh_guhtmh/globalhealthchronicles.org/application/views/helpers/Metadata.php:57
Stack trace:
#0 /home/dh_guhtmh/globalhealthchronicles.org/application/libraries/Zend/View/Abstract.php(349): Omeka_View_Helper_Metadata->metadata(NULL, Array, Array)
#1 /home/dh_guhtmh/globalhealthchronicles.org/application/libraries/globals.php(2033): Zend_View_Abstract->__call('metadata', Array)
#2 /home/dh_guhtmh/globalhealthchronicles.org/themes/berlin/items/browse.php(14): metadata(NULL, Array, Array)
#3 /home/dh_guhtmh/globalhealthchronicles.org/application/libraries/Omeka/View.php(117): include('/home/dh_guhtmh...')
#4 /home/dh_guhtmh/globalhealthchronicles.org/application/libraries/Zend/View/Abstract.php(888): Omeka_View->_run('/home/dh_guhtmh...')
#5 /home/dh_guhtmh/globalhealthchronicles.org/application/libraries/Zend/Controller/Action/Helper/ViewRenderer.php(912): Zend_View_Abstract->render(NULL)
#6 /home/dh_guhtmh/globalhealthchronicles.org/application/libraries/Zend/Controller/Action/Helper/ViewRenderer.php(933): Zend_Controller_Action_Helper_ViewRenderer->renderScript('items/browse.ph...', NULL)
#7 /home/dh_guhtmh/globalhealthchronicles.org/application/libraries/Zend/Controller/Action/Helper/ViewRenderer.php(972): Zend_Controller_Action_Helper_ViewRenderer->render()
#8 /home/dh_guhtmh/globalhealthchronicles.org/application/libraries/Zend/Controller/Action/HelperBroker.php(277): Zend_Controller_Action_Helper_ViewRenderer->postDispatch()
#9 /home/dh_guhtmh/globalhealthchronicles.org/application/libraries/Zend/Controller/Action.php(527): Zend_Controller_Action_HelperBroker->notifyPostDispatch()
#10 /home/dh_guhtmh/globalhealthchronicles.org/application/libraries/Zend/Controller/Dispatcher/Standard.php(308): Zend_Controller_Action->dispatch('browseAction')
#11 /home/dh_guhtmh/globalhealthchronicles.org/application/libraries/Zend/Controller/Front.php(954): Zend_Controller_Dispatcher_Standard->dispatch(Object(Zend_Controller_Request_Http), Object(Zend_Controller_Response_Http))
#12 /home/dh_guhtmh/globalhealthchronicles.org/application/libraries/Zend/Application/Bootstrap/Bootstrap.php(105): Zend_Controller_Front->dispatch()
#13 /home/dh_guhtmh/globalhealthchronicles.org/application/libraries/Zend/Application.php(384): Zend_Application_Bootstrap_Bootstrap->run()
#14 /home/dh_guhtmh/globalhealthchronicles.org/application/libraries/Omeka/Application.php(79): Zend_Application->run()
#15 /home/dh_guhtmh/globalhealthchronicles.org/index.php(23): Omeka_Application->run()
#16 {main}