Appstore missing after manual Upgrade NC16 to NC17

Please help! After trying upgrading my Nextcloud 16.0.10 to NC17.0.06 I can’t see any apps in the appstore. Only the apps that are installed.

I can install a fresh NC17 with working appstore. But when I transfer the NC16 data and database the appstore seems to be gone !?!

See my other post: "Could not connect to the appstore ..." after NC upgrade from 16.0.10 to 17.0.6