I followed this tutorial (https://www.marksei.com/how-to-install-nextcloud-15-on-ubuntu/) to install Nextcloud and I am not having luck. I followed all the instructions and even tried to reinstall a couple of times but I get this (see attached screenshot) when I go to localhost/next cloud.
I had a great success installing nextcloudpi on docker in a raspberrypi but I would like to install it in my server. Any help is appreciated.