Omeka has encountered an error

Zend_Db_Statement_Mysqli_Exception

Mysqli prepare error: Expression #8 of SELECT list is not in GROUP BY clause and contains nonaggregated column 'occuparch.l.latitude' which is not functionally dependent on columns in GROUP BY clause; this is incompatible with sql_mode=only_full_group_by

Backtrace

Zend_Db_Statement_Mysqli_Exception: Mysqli prepare error: Expression #8 of SELECT list is not in GROUP BY clause and contains nonaggregated column 'occuparch.l.latitude' which is not functionally dependent on columns in GROUP BY clause; this is incompatible with sql_mode=only_full_group_by in /websites/occuparch/www/application/libraries/Zend/Db/Statement/Mysqli.php:77
Stack trace:
#0 /websites/occuparch/www/application/libraries/Zend/Db/Statement.php(115): Zend_Db_Statement_Mysqli->_prepare('SELECT `i`.*, `...')
#1 /websites/occuparch/www/application/libraries/Zend/Db/Adapter/Mysqli.php(381): Zend_Db_Statement->__construct(Object(Zend_Db_Adapter_Mysqli), 'SELECT `i`.*, `...')
#2 /websites/occuparch/www/application/libraries/Zend/Db/Adapter/Abstract.php(478): Zend_Db_Adapter_Mysqli->prepare('SELECT `i`.*, `...')
#3 /websites/occuparch/www/application/libraries/Omeka/Db.php(84): Zend_Db_Adapter_Abstract->query('SELECT `i`.*, `...', Array)
#4 /websites/occuparch/www/application/libraries/Omeka/Db/Table.php(479): Omeka_Db->__call('query', Array)
#5 /websites/occuparch/www/application/libraries/Omeka/Db/Table.php(288): Omeka_Db_Table->fetchObjects(Object(Omeka_Db_Select))
#6 /websites/occuparch/www/application/libraries/Omeka/Controller/Action/Helper/SearchItems.php(161): Omeka_Db_Table->findBy(Array, 15, '1')
#7 /websites/occuparch/www/application/libraries/Omeka/Controller/Action/Helper/SearchItems.php(26): Omeka_Controller_Action_Helper_SearchItems->search(Array)
#8 /websites/occuparch/www/application/libraries/Zend/Controller/Action/HelperBroker.php(328): Omeka_Controller_Action_Helper_SearchItems->direct()
#9 /websites/occuparch/www/plugins/Geolocation/controllers/MapController.php(12): Zend_Controller_Action_HelperBroker->__call('searchItems', Array)
#10 /websites/occuparch/www/application/libraries/Zend/Controller/Action.php(513): Geolocation_MapController->browseAction()
#11 /websites/occuparch/www/application/libraries/Zend/Controller/Dispatcher/Standard.php(295): Zend_Controller_Action->dispatch('browseAction')
#12 /websites/occuparch/www/application/libraries/Zend/Controller/Front.php(954): Zend_Controller_Dispatcher_Standard->dispatch(Object(Zend_Controller_Request_Http), Object(Zend_Controller_Response_Http))
#13 /websites/occuparch/www/application/libraries/Zend/Application/Bootstrap/Bootstrap.php(97): Zend_Controller_Front->dispatch()
#14 /websites/occuparch/www/application/libraries/Zend/Application.php(366): Zend_Application_Bootstrap_Bootstrap->run()
#15 /websites/occuparch/www/application/libraries/Omeka/Core.php(166): Zend_Application->run()
#16 /websites/occuparch/www/index.php(30): Omeka_Core->run()
#17 {main}