Changing or updating the passphrase in gcp lamp vm
You have an issue with a proper ssh-key authorization. You may actually try the gcloud compute config-ssh first but I'd advise to go through the answers and documentation first to understand what you're doing.
I've found two answers for a similar questions that may help you:
- retrieving gcp passhprase
- scp exiting with error 1
Also have a look at the documentation that describes authorising ssh to your VM's:
- Authorizing Cloud SDK tools
- gcloud compute config-ssh