[BUGFIX] Fatal in DefaultConfiguration

Change-Id: I6f6c8a2ddc26a6c7584e6a067c887768cf3ae5b1
Resolves: #52316
Related: #52305
Releases: 6.2, 6.1, 6.0
Reviewed-on: https://review.typo3.org/24084
Reviewed-by: Christian Kuhn
Tested-by: Christian Kuhn