[BUGFIX] Use proper import statement in ErrorController

Due to moving a class name the import statement
in ErrorController was wrong.

Resolves: #85210
Related: #85101
Releases: master
Change-Id: I17cd062868ca3d0686218abd469a72cbdd08018b
Reviewed-on: https://review.typo3.org/57171


Tested-by: TYPO3com <no-reply@typo3.com>
Reviewed-by: Andreas Fernandez <a.fernandez@scripting-base.de>
Tested-by: Andreas Fernandez <a.fernandez@scripting-base.de>