PHP ERROR in core: E9999 - Cannot refresh row as parent is missing - fixed in DbDeadLockHandling context

ERROR Zend_Db_Table_Row_Exception: E9999 - Cannot refresh row as parent is missing
in core /webs/shared-translate5-instance-files/zend/Zend/Db/Table/Row/Abstract.php (775)
Request: PUT /editor/worker/22345
Trace:
#0 /webs/shared-translate5-instance-files/zend/Zend/Db/Table/Row/Abstract.php(575): Zend_Db_Table_Row_Abstract->_refresh()
#1 /webs/shared-translate5-instance-files/zend/Zend/Db/Table/Row/Abstract.php(440): Zend_Db_Table_Row_Abstract->_doUpdate()
#2 /webs/instance-1010/library/ZfExtended/Models/Entity/Abstract.php(283): Zend_Db_Table_Row_Abstract->save()
#3 /webs/instance-1010/library/ZfExtended/Worker/Abstract.php(529): ZfExtended_Models_Entity_Abstract->save()
#4 /webs/instance-1010/library/ZfExtended/Models/Db/DeadLockHandlerTrait.php(69): ZfExtended_Worker_Abstract->

()
#5 /webs/instance-1010/library/ZfExtended/Worker/Abstract.php(530): ZfExtended_Worker_Abstract->retryOnDeadlock(Object(Closure))
#6 /webs/instance-1010/library/ZfExtended/Worker/Abstract.php(462): ZfExtended_Worker_Abstract->_run()
#7 /webs/instance-1010/library/ZfExtended/Controllers/WorkerController.php(123): ZfExtended_Worker_Abstract->runQueued()
#8 /webs/shared-translate5-instance-files/zend/Zend/Controller/Action.php(516): ZfExtended_WorkerController->putAction()
#9 /webs/instance-1010/library/ZfExtended/Controllers/AAARestController.php(287): Zend_Controller_Action->dispatch('putAction')
#10 /webs/shared-translate5-instance-files/zend/Zend/Controller/Dispatcher/Standard.php(308): ZfExtended_RestController->dispatch('putAction')
#11 /webs/shared-translate5-instance-files/zend/Zend/Controller/Front.php(954): Zend_Controller_Dispatcher_Standard->dispatch(Object(REST_Controller_Request_Http), Object(Zend_Controller_Response_Http))
#12 /webs/shared-translate5-instance-files/zend/Zend/Application/Bootstrap/Bootstrap.php(105): Zend_Controller_Front->dispatch()
#13 /webs/shared-translate5-instance-files/zend/Zend/Application.php(384): Zend_Application_Bootstrap_Bootstrap->run()
#14 /webs/instance-1010/library/ZfExtended/Application.php(47): Zend_Application->run()
#15 /webs/instance-1010/library/ZfExtended/BaseIndex.php(149): ZfExtended_Application->run()
#16 /webs/instance-1010/public/index.php(35): ZfExtended_BaseIndex->startApplication()
#17

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