Unable to open the VM instance of Google cloud platform

Question

After increasing the size of Persistent disk I couldn't open the instance from SSH and it was showing this.

Transferring SSH keys to the VM. The key transfer to project metadata is taking an unusually long time. Transferring instead to instance metadata may be faster, but will transfer the keys only to this VM. If you wish to SSH into other VMs from this VM, you will need to transfer the keys accordingly. Click here to transfer the key to instance metadata. Note that this setting is persistent and needs to be disabled in the Instance Details page once enabled. You can drastically improve your key transfer times by migrating to OS Login.