Issue PM2 gives error port is already in use

[prashant.nirgun]

I am running node application on port 80 and a sub domain which is running on port 80.
If I run using node.js run application it works but the stdout was not able to trade it was not captured in error_log my application generate verbose output I need to read that

I install pm2 and disabled node.js and run pm2 start it shows port already in use.

I there any way I can run node.js application through manually so that I can read stdout

Problem is node.js component only run script file and not package.json run script