Hi I doing setup as per the document only I using existing Lamp stack.
here I opened the port 3000 https://prnt.sc/10mvxhy then I added the app dir and try to start the node application I get https://prnt.sc/10mvzcv this result. which show the port 3000 is off. also then here is some log data
2021-03-16T01:32:55: PM2 log: App [testnode:0] online
2021-03-16T01:32:56: PM2 log: App [testnode:0] exited with code [1] via signal [SIGINT]
2021-03-16T01:32:56: PM2 log: App [testnode:0] starting in -fork mode-
2021-03-16T01:32:56: PM2 log: App [testnode:0] online
2021-03-16T01:32:56: PM2 log: App [testnode:0] exited with code [1] via signal [SIGINT]
2021-03-16T01:32:56: PM2 log: App [testnode:0] starting in -fork mode-
2021-03-16T01:32:56: PM2 log: App [testnode:0] online
2021-03-16T01:32:56: PM2 log: App [testnode:0] exited with code [1] via signal [SIGINT]
2021-03-16T01:32:56: PM2 log: App [testnode:0] starting in -fork mode-
2021-03-16T01:32:56: PM2 log: App [testnode:0] online
2021-03-16T01:32:57: PM2 log: App [testnode:0] exited with code [1] via signal [SIGINT]
2021-03-16T01:32:57: PM2 log: App [testnode:0] starting in -fork mode-
2021-03-16T01:32:57: PM2 log: App [testnode:0] online
2021-03-16T01:32:57: PM2 log: App [testnode:0] exited with code [1] via signal [SIGINT]
2021-03-16T01:32:57: PM2 log: App [testnode:0] starting in -fork mode-
2021-03-16T01:32:57: PM2 log: App [testnode:0] online
2021-03-16T01:32:57: PM2 log: App [testnode:0] exited with code [1] via signal [SIGINT]
2021-03-16T01:32:57: PM2 log: App [testnode:0] starting in -fork mode-
2021-03-16T01:32:57: PM2 log: App [testnode:0] online
2021-03-16T01:32:57: PM2 log: App [testnode:0] exited with code [1] via signal [SIGINT]
2021-03-16T01:32:57: PM2 log: App [testnode:0] starting in -fork mode-
2021-03-16T01:32:57: PM2 log: App [testnode:0] online
2021-03-16T01:32:58: PM2 log: App [testnode:0] exited with code [1] via signal [SIGINT]
2021-03-16T01:32:58: PM2 log: App [testnode:0] starting in -fork mode-
2021-03-16T01:32:58: PM2 log: App [testnode:0] online
2021-03-16T01:32:58: PM2 log: App [testnode:0] exited with code [1] via signal [SIGINT]
2021-03-16T01:32:58: PM2 log: App [testnode:0] starting in -fork mode-
2021-03-16T01:32:58: PM2 log: App [testnode:0] online
2021-03-16T01:32:58: PM2 log: App [testnode:0] exited with code [1] via signal [SIGINT]
2021-03-16T01:32:58: PM2 log: App [testnode:0] starting in -fork mode-
2021-03-16T01:32:58: PM2 log: App [testnode:0] online
2021-03-16T01:32:58: PM2 log: App [testnode:0] exited with code [1] via signal [SIGINT]
2021-03-16T01:32:58: PM2 log: Script /www/wwwroot/app/app.js had too many unstable restarts (16). Stopped. "errored"

why the nodejs code not running ? whats wrong is going in my end. Can anyone guide me , thanks in advance.