How to restart chat addon if it is not working on your site? (after your server is restarted, change port, SSL key, cert in ChatApp.js )

Step1: Open SSH and login by SSH root account info
Step2: Open pm2
Step3: run pm2 list ChatApp to check ChatApp status
Step4: If ChatApp.js is not started then run pm2 start ChatApp.js
Step5: else if ChatApp.js is started then run pm2 restart ChatApp
Step6: Check chat addon on your site again