TYPO3 Core

If there is a DataProcessor used in a FLUIDTEMPLATE object which tries to resolve storagePids from the configuration with recursion set,
the following exception occurs:

Call to a member function getTreeList() on null

Error thrown in file
typo3/cms/typo3/sysext/extbase/Classes/Configuration/FrontendConfigurationManager.php in line 258.
30 TYPO3\CMS\Extbase\Configuration\FrontendConfigurationManager::getRecursiveStoragePids("-8", 3)

typo3/cms/typo3/sysext/extbase/Classes/Configuration/AbstractConfigurationManager.php:
00198:                 $frameworkConfiguration['persistence']['storagePid'] = $this->getRecursiveStoragePids(
00199:                     implode(',', $storagePids),
00200:                     (int)$frameworkConfiguration['persistence']['recursive']
00201:                 );
00202:             }

This is, because the running order has changed with this change https://github.com/TYPO3/TYPO3.CMS/commit/5c048a4c8017e4d50ab5f2343970a0fd33e4aaed in TYPO3\CMS\Frontend\ContentObject\FluidTemplateContentObject::render.

If you follow into TYPO3\CMS\Fluid\View\StandaloneView::construct (which was previously executed before the execution of dataProcessors were called) the method TYPO3\CMS\Extbase\Configuration\ConfigurationManager::setContentObject is called.

As this is not valid now, the method TYPO3\CMS\Extbase\Configuration\FrontendConfigurationManager::getRecursiveStoragePids tries to retrieve data from "null" which throws the mentioned exception.