Omeka has encountered an error

Zend_Db_Statement_Mysqli_Exception

Mysqli prepare error: Lost connection to MySQL server during query

exception 'Zend_Db_Statement_Mysqli_Exception' with message 'Mysqli prepare error: Lost connection to MySQL server during query' in /var/www/clinton_omeka/application/libraries/Zend/Db/Statement/Mysqli.php:77
Stack trace:
#0 /var/www/clinton_omeka/application/libraries/Zend/Db/Statement.php(115): Zend_Db_Statement_Mysqli->_prepare('SELECT `items`....')
#1 /var/www/clinton_omeka/application/libraries/Zend/Db/Adapter/Mysqli.php(388): Zend_Db_Statement->__construct(Object(Zend_Db_Adapter_Mysqli), 'SELECT `items`....')
#2 /var/www/clinton_omeka/application/libraries/Zend/Db/Adapter/Abstract.php(479): Zend_Db_Adapter_Mysqli->prepare('SELECT `items`....')
#3 /var/www/clinton_omeka/application/libraries/Zend/Db/Adapter/Abstract.php(756): Zend_Db_Adapter_Abstract->query(Object(Omeka_Db_Select), Array)
#4 [internal function]: Zend_Db_Adapter_Abstract->fetchRow(Object(Omeka_Db_Select), Array)
#5 /var/www/clinton_omeka/application/libraries/Omeka/Db.php(79): call_user_func_array(Array, Array)
#6 /var/www/clinton_omeka/application/libraries/Omeka/Db/Table.php(670): Omeka_Db->__call('fetchRow', Array)
#7 /var/www/clinton_omeka/application/libraries/Omeka/Db/Table.php(670): Omeka_Db->fetchRow(Object(Omeka_Db_Select), Array)
#8 /var/www/clinton_omeka/application/libraries/Omeka/Db/Table.php(214): Omeka_Db_Table->fetchObject(Object(Omeka_Db_Select), Array)
#9 /var/www/clinton_omeka/plugins/SolrSearch/helpers/SolrSearch_Helpers_View.php(92): Omeka_Db_Table->find('118460')
#10 /var/www/clinton_omeka/plugins/SolrSearch/views/shared/results/index.php(116): SolrSearch_Helpers_View::getDocumentUrl(Object(Apache_Solr_Document))
#11 /var/www/clinton_omeka/application/libraries/Omeka/View.php(117): include('/var/www/clinto...')
#12 /var/www/clinton_omeka/application/libraries/Zend/View/Abstract.php(888): Omeka_View->_run('/var/www/clinto...')
#13 /var/www/clinton_omeka/application/libraries/Zend/Controller/Action/Helper/ViewRenderer.php(912): Zend_View_Abstract->render('results/index.p...')
#14 /var/www/clinton_omeka/application/libraries/Zend/Controller/Action/Helper/ViewRenderer.php(933): Zend_Controller_Action_Helper_ViewRenderer->renderScript('results/index.p...', NULL)
#15 /var/www/clinton_omeka/application/libraries/Zend/Controller/Action/Helper/ViewRenderer.php(972): Zend_Controller_Action_Helper_ViewRenderer->render()
#16 /var/www/clinton_omeka/application/libraries/Zend/Controller/Action/HelperBroker.php(277): Zend_Controller_Action_Helper_ViewRenderer->postDispatch()
#17 /var/www/clinton_omeka/application/libraries/Zend/Controller/Action.php(527): Zend_Controller_Action_HelperBroker->notifyPostDispatch()
#18 /var/www/clinton_omeka/application/libraries/Zend/Controller/Dispatcher/Standard.php(308): Zend_Controller_Action->dispatch('indexAction')
#19 /var/www/clinton_omeka/application/libraries/Zend/Controller/Front.php(954): Zend_Controller_Dispatcher_Standard->dispatch(Object(Zend_Controller_Request_Http), Object(Zend_Controller_Response_Http))
#20 /var/www/clinton_omeka/application/libraries/Zend/Application/Bootstrap/Bootstrap.php(105): Zend_Controller_Front->dispatch()
#21 /var/www/clinton_omeka/application/libraries/Zend/Application.php(384): Zend_Application_Bootstrap_Bootstrap->run()
#22 /var/www/clinton_omeka/application/libraries/Omeka/Application.php(77): Zend_Application->run()
#23 /var/www/clinton_omeka/index.php(23): Omeka_Application->run()
#24 {main}