TimeOut on waiting for the following materialized view to be filled

ERROR Zend_Exception: E9999 - TimeOut on waiting for the following materialized view to be filled (Task {a8a26422-3f9e-4ae9-83f2-bdff205c548b}): LEK_segment_view_c685a3ebc21d1a1545c268ea44f6df8d in core /var/www/translate5/application/modules/editor/Models/Segment/MaterializedView.php (196) Request: PUT /editor/worker/1776 Trace: #0 /var/www/translate5/application/modules/editor/Models/Segment/MaterializedView.php(96): editor_Models_Segment_MaterializedView->checkMvFillState() #1 /var/www/translate5/application/modules/editor/Models/Task.php(571): editor_Models_Segment_MaterializedView->create() #2 /var/www/translate5/application/modules/editor/Models/Import/Worker/Import.php(106): editor_Models_Task->createMaterializedView() #3 /var/www/translate5/application/modules/editor/Models/Import/Worker.php(76): editor_Models_Import_Worker_Import->import() #4 /var/www/translate5/library/ZfExtended/Worker/Abstract.php(489): editor_Models_Import_Worker->work() #5 /var/www/translate5/library/ZfExtended/Worker/Abstract.php(431): ZfExtended_Worker_Abstract->_run() #6 /var/www/translate5/library/ZfExtended/Controllers/WorkerController.php(123): ZfExtended_Worker_Abstract->runQueued() #7 /var/www/translate5/application/modules/editor/Controllers/WorkerController.php(37): ZfExtended_WorkerController->putAction() #8 /var/www/translate5/vendor/shardj/zf1-future/library/Zend/Controller/Action.php(516): editor_WorkerController->putAction() #9 /var/www/translate5/library/ZfExtended/Controllers/AAARestController.php(291): Zend_Controller_Action->dispatch() #10 /var/www/translate5/vendor/shardj/zf1-future/library/Zend/Controller/Dispatcher/Standard.php(308): ZfExtended_RestController->dispatch() #11 /var/www/translate5/vendor/shardj/zf1-future/library/Zend/Controller/Front.php(954): Zend_Controller_Dispatcher_Standard->dispatch() #12 /var/www/translate5/vendor/shardj/zf1-future/library/Zend/Application/Bootstrap/Bootstrap.php(105): Zend_Controller_Front->dispatch() #13 /var/www/translate5/vendor/shardj/zf1-future/library/Zend/Application.php(384): Zend_Application_Bootstrap_Bootstrap->run() #14 /var/www/translate5/library/ZfExtended/Application.php(47): Zend_Application->run() #15 /var/www/translate5/library/ZfExtended/BaseIndex.php(149): ZfExtended_Application->run() #16 /var/www/translate5/public/index.php(35): ZfExtended_BaseIndex->startApplication() #17 {main}