Omeka a rencontré une erreur

Zend_Http_Client_Exception

Unable to read response, or response is empty

exception 'Zend_Http_Client_Exception' with message 'Unable to read response, or response is empty' in /sites/transcri/www/web_main/application/libraries/Zend/Http/Client.php:1093
Stack trace:
#0 /sites/transcri/www/web_main/plugins/Scripto/libraries/Scripto/Service/MediaWiki.php(708): Zend_Http_Client->request('POST')
#1 /sites/transcri/www/web_main/plugins/Scripto/libraries/Scripto/Service/MediaWiki.php(469): Scripto_Service_MediaWiki->_request('query', Array)
#2 /sites/transcri/www/web_main/plugins/Scripto/libraries/Scripto/Service/MediaWiki.php(160): Scripto_Service_MediaWiki->query(Array)
#3 /sites/transcri/www/web_main/plugins/Scripto/libraries/Scripto/Document.php(911): Scripto_Service_MediaWiki->getUserInfo('rights')
#4 /sites/transcri/www/web_main/plugins/Scripto/libraries/Scripto/Document.php(509): Scripto_Document->_canEdit(Array)
#5 /sites/transcri/www/web_main/themes/transcrire/scripto/index/transcribe.php(433): Scripto_Document->canEditTranscriptionPage()
#6 /sites/transcri/www/web_main/application/libraries/Omeka/View.php(117): include('/sites/transcri...')
#7 /sites/transcri/www/web_main/application/libraries/Zend/View/Abstract.php(888): Omeka_View->_run('/sites/transcri...')
#8 /sites/transcri/www/web_main/application/libraries/Zend/Controller/Action/Helper/ViewRenderer.php(912): Zend_View_Abstract->render('index/transcrib...')
#9 /sites/transcri/www/web_main/application/libraries/Zend/Controller/Action/Helper/ViewRenderer.php(933): Zend_Controller_Action_Helper_ViewRenderer->renderScript('index/transcrib...', NULL)
#10 /sites/transcri/www/web_main/application/libraries/Zend/Controller/Action/Helper/ViewRenderer.php(972): Zend_Controller_Action_Helper_ViewRenderer->render()
#11 /sites/transcri/www/web_main/application/libraries/Zend/Controller/Action/HelperBroker.php(277): Zend_Controller_Action_Helper_ViewRenderer->postDispatch()
#12 /sites/transcri/www/web_main/application/libraries/Zend/Controller/Action.php(527): Zend_Controller_Action_HelperBroker->notifyPostDispatch()
#13 /sites/transcri/www/web_main/application/libraries/Zend/Controller/Dispatcher/Standard.php(308): Zend_Controller_Action->dispatch('transcribeActio...')
#14 /sites/transcri/www/web_main/application/libraries/Zend/Controller/Front.php(954): Zend_Controller_Dispatcher_Standard->dispatch(Object(Zend_Controller_Request_Http), Object(Zend_Controller_Response_Http))
#15 /sites/transcri/www/web_main/application/libraries/Zend/Application/Bootstrap/Bootstrap.php(105): Zend_Controller_Front->dispatch()
#16 /sites/transcri/www/web_main/application/libraries/Zend/Application.php(384): Zend_Application_Bootstrap_Bootstrap->run()
#17 /sites/transcri/www/web_main/application/libraries/Omeka/Application.php(79): Zend_Application->run()
#18 /sites/transcri/www/web_main/index.php(24): Omeka_Application->run()
#19 {main}