Unable to start VM after upgrade

[JackJack1]

Unable to start VM after upgrade.

System prompt:

Unable to start "luxuryhome": A n1-standard-1 VM instance is currently unavailable in the asia-east1-b zone. Alternatively, you can try your request again with a different VM hardware configuration or at a later time. For For more information, see the troubleshooting documentation.

[yrhsk]

The VM size (n1-standard-1) you're trying to use is temporarily unavailable in the asia-east1-b zone, where you provisioned the VM before. You can try a few things to resolve this issue:
1) attempt to start the VM again later, as availability might change;
2) consider changing the machine type to a different configuration that might be available (especially if that's urgent)
3) Move your VM to a different zone where the capacity is available. To change the zone, you'll need to create a snapshot of your disk, create a new VM in a different zone using that snapshot, and then delete the old VM (if needed)