OS: Ubuntu Linux 18.04.5, Webmin: 1.973, Virtualmin: 6.15, Usermin: 1.823, Authentic Theme: 19.73
I have 3 virtual servers on the system and I just noticed that I can’t access port 20000 on one of the 3 virtual servers. The browser just simply return the following error:
This site can’t be reached **example.com** took too long to respond.
How should I go about debugging and fixing this?