XF 1.5 /library/XenForo/Deferred/Abstract.php on line 49

[jolly]

seems my site is broke, how do i fix this?

An exception occurred: Class name must be a valid object or a string in /library/XenForo/Deferred/Abstract.php on line 49

[*]XenForo_Deferred_Abstract::create() in XenForo/Model/Deferred.php at line 277
[*]XenForo_Model_Deferred->runDeferred() in XenForo/Model/Deferred.php at line 429
[*]XenForo_Model_Deferred->_runInternal() in XenForo/Model/Deferred.php at line 374
[*]XenForo_Model_Deferred->run() in XenForo/ControllerAdmin/Tools.php at line 159
[*]XenForo_ControllerAdmin_Tools->actionRunDeferred() in XenForo/FrontController.php at line 351
[*]XenForo_FrontController->dispatch() in XenForo/FrontController.php at line 134
[*]XenForo_FrontController->run() in ****/admin.php at line 13

 

[jolly]

Strange, i think the forum healed it's self..
I didnt change anything but the error has vanished when doing the same tasks.