Omeka has encountered an error

InvalidArgumentException

Invalid record passed to recordMetadata.

InvalidArgumentException: Invalid record passed to recordMetadata. in /home/squareda/public_html/application/views/helpers/Metadata.php:58
Stack trace:
#0 /home/squareda/public_html/application/libraries/Zend/View/Abstract.php(349): Omeka_View_Helper_Metadata->metadata(NULL, Array, Array)
#1 /home/squareda/public_html/application/libraries/globals.php(2038): Zend_View_Abstract->__call('metadata', Array)
#2 /home/squareda/public_html/plugins/ItemRelations/ItemRelationsPlugin.php(499): metadata(NULL, Array, Array)
#3 /home/squareda/public_html/plugins/ItemRelations/ItemRelationsPlugin.php(461): ItemRelationsPlugin::getItemTitle(1514)
#4 /home/squareda/public_html/plugins/ItemRelations/ItemRelationsPlugin.php(254): ItemRelationsPlugin::prepareSubjectRelations(Object(Item))
#5 /home/squareda/public_html/application/libraries/Omeka/Plugin/Broker.php(157): ItemRelationsPlugin->hookPublicItemsShow(Array)
#6 /home/squareda/public_html/application/libraries/globals.php(188): Omeka_Plugin_Broker->callHook('public_items_sh...', Array)
#7 /home/squareda/public_html/themes/bigpicture/items/show.php(153): fire_plugin_hook('public_items_sh...', Array)
#8 /home/squareda/public_html/application/libraries/Omeka/View.php(117): include('/home/squareda/...')
#9 /home/squareda/public_html/application/libraries/Zend/View/Abstract.php(888): Omeka_View->_run('/home/squareda/...')
#10 /home/squareda/public_html/application/libraries/Zend/Controller/Action/Helper/ViewRenderer.php(912): Zend_View_Abstract->render(NULL)
#11 /home/squareda/public_html/application/libraries/Zend/Controller/Action/Helper/ViewRenderer.php(933): Zend_Controller_Action_Helper_ViewRenderer->renderScript('items/show.php', NULL)
#12 /home/squareda/public_html/application/libraries/Zend/Controller/Action/Helper/ViewRenderer.php(972): Zend_Controller_Action_Helper_ViewRenderer->render()
#13 /home/squareda/public_html/application/libraries/Zend/Controller/Action/HelperBroker.php(277): Zend_Controller_Action_Helper_ViewRenderer->postDispatch()
#14 /home/squareda/public_html/application/libraries/Zend/Controller/Action.php(527): Zend_Controller_Action_HelperBroker->notifyPostDispatch()
#15 /home/squareda/public_html/application/libraries/Zend/Controller/Dispatcher/Standard.php(308): Zend_Controller_Action->dispatch('showAction')
#16 /home/squareda/public_html/application/libraries/Zend/Controller/Front.php(954): Zend_Controller_Dispatcher_Standard->dispatch(Object(Zend_Controller_Request_Http), Object(Zend_Controller_Response_Http))
#17 /home/squareda/public_html/application/libraries/Zend/Application/Bootstrap/Bootstrap.php(105): Zend_Controller_Front->dispatch()
#18 /home/squareda/public_html/application/libraries/Zend/Application.php(384): Zend_Application_Bootstrap_Bootstrap->run()
#19 /home/squareda/public_html/application/libraries/Omeka/Application.php(77): Zend_Application->run()
#20 /home/squareda/public_html/index.php(23): Omeka_Application->run()
#21 {main}