AWS EC2 Instance will not stop or terminate - Instance ID does not exist

I keep trying to stop or terminate my EC2 instance (id i-05e091ac563783d77) and it first comes up with an error message saying an internal error has occured; sometimes an error message will come up saying the instance id does not exist.

I have tried forcing the stop through the console and through the CLI and it gives the same 'instance id does not exist' error message even though it does exist and has a state of 'running'.