TYPO3 Core

After doing a "composer update" this morning, the package phpdocumentor/reflection-docblock was updated from version 5.1.0 to 5.2.0

After this Update, the front- and backend throws this exception:

InvalidArgumentException
Expected an implementation of "phpDocumentor\Reflection\DocBlock\Tag". Got: "TYPO3\CMS\Extbase\Reflection\DocBlock\Tags\Null_" 

My composer.json packages are:

"require": {
    "helhum/typo3-console": "^6",
    "typo3/cms-about": "^10.4",
    "typo3/cms-adminpanel": "^10.4",
    "typo3/cms-backend": "^10.4",
    "typo3/cms-belog": "^10.4",
    "typo3/cms-beuser": "^10.4",
    "typo3/cms-core": "^10.4",
    "typo3/cms-dashboard": "^10.4",
    "typo3/cms-extbase": "^10.4",
    "typo3/cms-extensionmanager": "^10.4",
    "typo3/cms-felogin": "^10.4",
    "typo3/cms-filelist": "^10.4",
    "typo3/cms-filemetadata": "^10.4",
    "typo3/cms-fluid": "^10.4",
    "typo3/cms-fluid-styled-content": "^10.4",
    "typo3/cms-form": "^10.4",
    "typo3/cms-frontend": "^10.4",
    "typo3/cms-impexp": "^10.4",
    "typo3/cms-info": "^10.4",
    "typo3/cms-install": "^10.4",
    "typo3/cms-linkvalidator": "^10.4",
    "typo3/cms-lowlevel": "^10.4",
    "typo3/cms-recordlist": "^10.4",
    "typo3/cms-redirects": "^10.4",
    "typo3/cms-rte-ckeditor": "^10.4",
    "typo3/cms-scheduler": "^10.4",
    "typo3/cms-seo": "^10.4",
    "typo3/cms-setup": "^10.4",
    "typo3/cms-sys-note": "^10.4",
    "typo3/cms-t3editor": "^10.4",
    "typo3/cms-tstemplate": "^10.4",
    "typo3/cms-viewpage": "^10.4",
    "friendsoftypo3/taskcenter": "^10.0.0",
    "friendsoftypo3/sys-action": "^10.0.0",
    "georgringer/news": "^8.3",
    "teaminmedias-pluswerk/ke_search": "^3.1" 
},

For testing I removed all packages that are NOT "typo3/cms-*", but the same error appears.

Its happening in a local DDEV environment as well as on an external webserver.

"php -v" -> 7.4.6 (local) and 7.2.28 (hosted server)