Just migrated from old OwnCloud to Nextcloud 15, I cannot get calendar to sync with Linux calendar apps.
Thunderbird Lightning : account seems to go in OK, but nothing happens - btw, this is what I used with the OwnCloud install and it worked perfectly
Gnome Calendar : can’t get past account setup, says “Cannot find WebDAV endpoint”
Fortunately, my SONY Xperia running Sailfish syncs no problem !
What am I doing wrong ?