TYPO3.Neos

When attempting to run the workspace module (ie http://dev.phoenix.example.org/typo3/management/workspaces), the following exception occurs:

#1: Catchable Fatal Error: Argument 1 passed to TYPO3\TYPO3CR\Domain\Model\Node_Original::createProxyForContextIfNeeded() must implement interface TYPO3\TYPO3CR\Domain\Model\NodeInterface, null given, called in C:\Users\afoeder\PhpstormProjects\Edsh\edsh.de\Data\Temporary\Development\Cache\Code\FLOW3_Object_Classes\TYPO3_TYPO3CR_Domain_Model_Node_Original.php on line 347 and defined in C:\Users\afoeder\PhpstormProjects\Edsh\edsh.de\Data\Temporary\Development\Cache\Code\FLOW3_Object_Classes\TYPO3_TYPO3CR_Domain_Model_Node_Original.php line 963 (More information)

The full exception log txt reads

Uncaught exception #1 in line 963 of C:\Users\afoeder\PhpstormProjects\Edsh\edsh.de\Data\Temporary\Development\Cache\Code\FLOW3_Object_Classes\TYPO3_TYPO3CR_Domain_Model_Node_Original.php: Catchable Fatal Error: Argument 1 passed to TYPO3\TYPO3CR\Domain\Model\Node_Original::createProxyForContextIfNeeded() must implement interface TYPO3\TYPO3CR\Domain\Model\NodeInterface, null given, called in C:\Users\afoeder\PhpstormProjects\Edsh\edsh.de\Data\Temporary\Development\Cache\Code\FLOW3_Object_Classes\TYPO3_TYPO3CR_Domain_Model_Node_Original.php on line 347 and defined in C:\Users\afoeder\PhpstormProjects\Edsh\edsh.de\Data\Temporary\Development\Cache\Code\FLOW3_Object_Classes\TYPO3_TYPO3CR_Domain_Model_Node_Original.php line 963

36 TYPO3\FLOW3\Error\ErrorHandler::handleError(4096, "Argument 1 passed to TYPO3\TYPO3CR\Domain\Model\Node_Original::createProxyForContextIfNeeded() must implement interface TYPO3\TYPO3CR\Domain\Model\NodeInterface, null given, called in C:\Users\afoeder\PhpstormProjects\Edsh\edsh.de\Data\Temporary\Development\Cache\Code\FLOW3_Object_Classes\TYPO3_TYPO3CR_Domain_Model_Node_Original.php on line 347 and defined", "C:\Users\afoeder\PhpstormProjects\Edsh\edsh.de\Data\Temporary\Development\Cache\Code\FLOW3_Object_Classes\TYPO3_TYPO3CR_Domain_Model_Node_Original.php", 963, array)
35 TYPO3\TYPO3CR\Domain\Model\Node_Original::createProxyForContextIfNeeded(NULL)
34 TYPO3\TYPO3CR\Domain\Model\Node_Original::getParent()
33 TYPO3\TYPO3\Controller\Module\Management\WorkspacesController_Original::findFolderNode(TYPO3\TYPO3CR\Domain\Model\Node)
32 TYPO3\TYPO3\Controller\Module\Management\WorkspacesController_Original::indexAction(NULL)
31 call_user_func_array(array, array)
30 TYPO3\FLOW3\Mvc\Controller\ActionController_Original::callActionMethod()
29 TYPO3\FLOW3\Mvc\Controller\ActionController_Original::processRequest(TYPO3\FLOW3\Mvc\ActionRequest, TYPO3\FLOW3\Http\Response)
28 TYPO3\FLOW3\Mvc\Dispatcher_Original::dispatch(TYPO3\FLOW3\Mvc\ActionRequest, TYPO3\FLOW3\Http\Response)
27 TYPO3\FLOW3\Mvc\Dispatcher::dispatch(TYPO3\FLOW3\Mvc\ActionRequest, TYPO3\FLOW3\Http\Response)
26 TYPO3\TYPO3\Controller\Backend\ModuleController_Original::indexAction(array)
25 TYPO3\TYPO3\Controller\Backend\ModuleController::indexAction(array)
24 call_user_func_array(array, array)
23 TYPO3\TYPO3\Controller\Backend\ModuleController::FLOW3_Aop_Proxy_invokeJoinPoint(TYPO3\FLOW3\Aop\JoinPoint)
22 TYPO3\FLOW3\Aop\Advice\AdviceChain::proceed(TYPO3\FLOW3\Aop\JoinPoint)
21 TYPO3\FLOW3\Security\Aspect\PolicyEnforcementAspect_Original::enforcePolicy(TYPO3\FLOW3\Aop\JoinPoint)
20 TYPO3\FLOW3\Aop\Advice\AroundAdvice::invoke(TYPO3\FLOW3\Aop\JoinPoint)
19 TYPO3\FLOW3\Aop\Advice\AdviceChain::proceed(TYPO3\FLOW3\Aop\JoinPoint)
18 TYPO3\TYPO3\Controller\Backend\ModuleController::indexAction(array)
17 call_user_func_array(array, array)
16 TYPO3\FLOW3\Mvc\Controller\ActionController_Original::callActionMethod()
15 TYPO3\FLOW3\Mvc\Controller\ActionController_Original::processRequest(TYPO3\FLOW3\Mvc\ActionRequest, TYPO3\FLOW3\Http\Response)
14 TYPO3\FLOW3\Mvc\Dispatcher_Original::dispatch(TYPO3\FLOW3\Mvc\ActionRequest, TYPO3\FLOW3\Http\Response)
13 TYPO3\FLOW3\Mvc\Dispatcher::dispatch(TYPO3\FLOW3\Mvc\ActionRequest, TYPO3\FLOW3\Http\Response)
12 call_user_func_array(array, array)
11 TYPO3\FLOW3\Mvc\Dispatcher::FLOW3_Aop_Proxy_invokeJoinPoint(TYPO3\FLOW3\Aop\JoinPoint)
10 TYPO3\FLOW3\Aop\Advice\AdviceChain::proceed(TYPO3\FLOW3\Aop\JoinPoint)
9 TYPO3\FLOW3\Security\Aspect\RequestDispatchingAspect_Original::setAccessDeniedResponseHeader(TYPO3\FLOW3\Aop\JoinPoint)
8 TYPO3\FLOW3\Aop\Advice\AroundAdvice::invoke(TYPO3\FLOW3\Aop\JoinPoint)
7 TYPO3\FLOW3\Aop\Advice\AdviceChain::proceed(TYPO3\FLOW3\Aop\JoinPoint)
6 TYPO3\FLOW3\Security\Aspect\RequestDispatchingAspect_Original::blockIllegalRequestsAndForwardToAuthenticationEntryPoints(TYPO3\FLOW3\Aop\JoinPoint)
5 TYPO3\FLOW3\Aop\Advice\AroundAdvice::invoke(TYPO3\FLOW3\Aop\JoinPoint)
4 TYPO3\FLOW3\Aop\Advice\AdviceChain::proceed(TYPO3\FLOW3\Aop\JoinPoint)
3 TYPO3\FLOW3\Mvc\Dispatcher::dispatch(TYPO3\FLOW3\Mvc\ActionRequest, TYPO3\FLOW3\Http\Response)
2 TYPO3\FLOW3\Http\RequestHandler::handleRequest()
1 TYPO3\FLOW3\Core\Bootstrap::run()