Thank you. Now all is fine, just one problem left.
I followed this tutorial: HowTo: Change / Move data directory after installation
And used Method 2 to symlink out my data directory. When I do you suggested number 9, do I need to do this also on the linked directories? Or does linux do it automaticly? I looked now in the directory and the symlink itself is 777.
To be on the secure site:
I went to /var/www/ and followed your suggestion. Was this right or do I need to go in the nextcloud directory?
I looked at the linked directory:
drwxrwx— 19 www-data www-data 4096 Feb 28 07:25 data
This is still correct, but in this it seems to look not correct, e.g.:
-rwxrwxrwx 1 www-data www-data 1126022 Mar 17 11:37 updater.log
drwxr-xr-x 4 www-data www-data 4096 Mar 17 11:42 updater-oc6t6ey2ygrc
drwxrwxrwx 4 www-data www-data 4096 Aug 19 2017 updater-oc6wqgwqj867
Now I see that I have a bigger problem with my permissions and I will open for this next time a new topic, sorry for spamming for support in the news category 