i just upgraded my nextcloud manually to Version 15. Also i want so upgrade php from Version 7.0 to 7.3.
Now my Nextcloud is on Version 15 and php at Version 7.3.
My Problem is that Nextcloud tell me that my opcache is not configured.
I have installed the php module opcache and make any changes at the php.ini.
Did you install the opcache PHP module after the upgrade to PHP7.3?
I noticed on my system, that I had to reinstall several modules again, while they got removed during the update.
Could you double-check please?