Update from NextCloud 11 to NC 12.0.3.3 - no more sharing button

Hello!

Just do not go any further, the NC11 runs without problems and can also share data with link etc …
I make the update to the most recent version of 12 missing this share button completely, no matter in which browser synonymous always.

System: Ubuntu Server 16.04.1, Apache2, php7.0, mysql, all up-to-date

Also find nix if in Google search to these errors, also in English.

Otherwise, the NC12 works problem-free and runs very well, except the button for data to divide is missing and apparently not possible.

Regards
Johann

So if you click the … menu and go for details there is also no sharing in the sidebar?