Omeka has encountered an error

Zend_Http_Client_Exception

Unable to read response, or response is empty

#0 /db/omeka-sites/sailaway/plugins/Scripto/libraries/Scripto/Service/MediaWiki.php(664): Zend_Http_Client->request('POST')
#1 /db/omeka-sites/sailaway/plugins/Scripto/libraries/Scripto/Service/MediaWiki.php(466): Scripto_Service_MediaWiki->_request('query', Array)
#2 /db/omeka-sites/sailaway/plugins/Scripto/libraries/Scripto/Service/MediaWiki.php(157): Scripto_Service_MediaWiki->query(Array)
#3 /db/omeka-sites/sailaway/plugins/Scripto/libraries/Scripto/Document.php(889): Scripto_Service_MediaWiki->getUserInfo('rights')
#4 /db/omeka-sites/sailaway/plugins/Scripto/libraries/Scripto/Document.php(509): Scripto_Document->_canEdit(Array)
#5 /db/omeka-sites/sailaway/themes/berlin/scripto/index/transcribe.php(367): Scripto_Document->canEditTranscriptionPage()
#6 /db/omeka-sites/sailaway/application/libraries/Omeka/View.php(117): include('/db/omeka-sites...')
#7 /db/omeka-sites/sailaway/application/libraries/Zend/View/Abstract.php(888): Omeka_View->_run('/db/omeka-sites...')
#8 /db/omeka-sites/sailaway/application/libraries/Zend/Controller/Action/Helper/ViewRenderer.php(900): Zend_View_Abstract->render('index/transcrib...')
#9 /db/omeka-sites/sailaway/application/libraries/Zend/Controller/Action/Helper/ViewRenderer.php(921): Zend_Controller_Action_Helper_ViewRenderer->renderScript('index/transcrib...', NULL)
#10 /db/omeka-sites/sailaway/application/libraries/Zend/Controller/Action/Helper/ViewRenderer.php(960): Zend_Controller_Action_Helper_ViewRenderer->render()
#11 /db/omeka-sites/sailaway/application/libraries/Zend/Controller/Action/HelperBroker.php(277): Zend_Controller_Action_Helper_ViewRenderer->postDispatch()
#12 /db/omeka-sites/sailaway/application/libraries/Zend/Controller/Action.php(527): Zend_Controller_Action_HelperBroker->notifyPostDispatch()
#13 /db/omeka-sites/sailaway/application/libraries/Zend/Controller/Dispatcher/Standard.php(308): Zend_Controller_Action->dispatch('transcribeActio...')
#14 /db/omeka-sites/sailaway/application/libraries/Zend/Controller/Front.php(954): Zend_Controller_Dispatcher_Standard->dispatch(Object(Zend_Controller_Request_Http), Object(Zend_Controller_Response_Http))
#15 /db/omeka-sites/sailaway/application/libraries/Zend/Application/Bootstrap/Bootstrap.php(101): Zend_Controller_Front->dispatch()
#16 /db/omeka-sites/sailaway/application/libraries/Zend/Application.php(366): Zend_Application_Bootstrap_Bootstrap->run()
#17 /db/omeka-sites/sailaway/application/libraries/Omeka/Application.php(79): Zend_Application->run()
#18 /db/omeka-sites/sailaway/index.php(23): Omeka_Application->run()
#19 {main}