Web - Server

I successfully uploaded the pentestmonkey/php-reverse-shell script but when I run it, it says no route to host.
The script tries to connect to my public ip address and port I forwarded and put listener on.
Previously I could connect in LAN environment, now I tested the port with another application for accessibility and it worked fine.
Can you give me some hint please? I couldn’t find any useful information on google either.

I realised I was on a wrong path, got it now. :)