Problem while updating to 22.1.1.2 - files_sharing

Hello,
my instance of nextcloud has a problem with the latest update. it continously will update the app “files_sharing”. i now have deleted it over ftp and everything works again. My question: what is “files_sharing” for and, if its what i guess from the name, what is the name in the “app store” so i can reinstall a version that works?
sven