Cannot change listener port to port 80

There was nothing else running on port 80 and I installed the server with the bare minimum; only Open SSH was chosen as an additional package.

When I connect to the server I get the default nginx page telling me that additional configuration is required. By now I found that what is that the below is what I can find in /var/www/html in the file index.nginx-debian.html. The folder does not contain any other file.

I looked at the configuration files of nginx but I don’t yet understand how nginx gets configured to actually connect to kolibri and what site should be loaded when a user connects to the server.

The error.log file you asked me to provide is empty and the /var/log/nginx/kolibri_uwsgi.log contains the following:

praths@amcebab02vs:/var/log/nginx$ cat kolibri_uwsgi.log
10.0.101.254 - - [07/Aug/2020:00:40:51 +0800] “GET / HTTP/1.1” 200 396 “-” “Mozilla/5.0 (iPhone; CPU iPhone OS 13_5_1
like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/13.1.1 Mobile/15E148 Safari/604.1” 0.000 - .
10.0.101.254 - - [07/Aug/2020:00:40:51 +0800] “GET /favicon.ico HTTP/1.1” 404 134 “http://10.0.100.22/” “Mozilla/5.0 (iPhone; CPU iPhone OS
13_5_1 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/13.1.1 Mobile/15E148 Safari/604.1” 0.000 - .
10.0.100.139 - - [07/Aug/2020:00:46:53 +0800] “GET / HTTP/1.1” 200 396 “-” “Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_5) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/13.1.1 Safari/605.1.15” 0.000 - .
10.0.100.139 - - [07/Aug/2020:00:46:53 +0800] “GET /apple-touch-icon-precomposed.png HTTP/1.1” 404 134 “-” “Safari/15609.2.9.1.2 CFNetwork/1126 Darwin/19.5.0 (x86_64)” 0.000 - .
10.0.100.139 - - [07/Aug/2020:00:46:53 +0800] “GET /apple-touch-icon.png HTTP/1.1” 404 134 “-” “Safari/15609.2.9.1.2 CFNetwork/1126 Darwin/19.5.0 (x86_64)” 0.000 - .
10.0.100.139 - - [07/Aug/2020:00:46:53 +0800] “GET /favicon.ico HTTP/1.1” 404 134 “http://10.0.100.22/” “Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_5) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/13.1.1 Safari/605.1.15” 0.000 - .