Uncaught TYPO3 Exception: #1256475113 when trying to add new site configuration

I always get the following error in typo3 (Version: 9.5.11) when i try to Add a new site configuration (Site Management -> Site -> Add new site configuration for this site)

Core: Exception handler (WEB): Uncaught TYPO3 Exception: #1256475113: The argument "parameters" was registered with type "array", but is of type "string" in view helper "TYPO3\CMS\Fluid\ViewHelpers\Be\UriViewHelper". | InvalidArgumentException thrown in file .../typo3_src-9.5.11/vendor/typo3fluid/fluid/src/Core/ViewHelper/AbstractViewHelper.php in line 356. Requested URL: http://localhost/mytypo3/typo3/index.php?route=%%2Fsite%%2Fconfiguration%%2F&token=--AnonymizedToken--&action=edit&pageUid=88

Any solutions for this problem?