In Google Cloud Platform ( gcp ) I have some Compute VM where host my website. I need to stop some VM temporary. After passed some hour, I need to start VM again. My Compute VM has been started but My VM external IP address & SSH are not accessable. I also added screenshot of SSH error. When I try to access ip address from terminal/browser then doesn’t reached.
How can I fix this issue.
SSH Eror below text

Code: 4003
Reason: failed to connect to backend

Connection to VM is refused.

SSH Error screenshot

I try to access SSH & check Firewall rules.