I am trying to get a web app running on port 8080 but was having problems connecting to it. Then I noticed that port 8080 on localhost was returning a 404 even when the app was not running suggesting that another web server is listening on that port.
I am running on Ubuntu 22.04
I ran sudo netstat -tulpn | grep 8080 but nothing is shown as listening on port 8080. I rebooted and found that 8080 is still listening but not being reported in netstat.
There is nothing in the /var/log/syslog that mentions port 8080
I do have docker installed, but I have no containers running and I have also stopped the docker service.
Can anyone suggest how I can find out what is listening on port 8080 and stop it.