Error: UPGRADE FAILED: another operation (install/upgrade/rollback) is in progress

[G2bb]

I've been having trouble getting some of my apps to start up after a recent reboot of my system. When I try to modify or redeploy any of the services I get this error

Code:

Error: UPGRADE FAILED: another operation (install/upgrade/rollback) is in progress

I'm fairly new to Kubernetes so I don't even know where to begin diagnosing the issue. I've done some digging online and found this post but I can't try any of their suggestions because when I SSH into the server and try using Kubernetes commands I get:

Code:

Error: Kubernetes cluster unreachable: Get "http://localhost:8080/version": dial tcp [::1]:8080: connect: connection refused

Any help would be greatly appreciated.