Error Running Subtask --> Unable to find ''. It may have been moved, renamed, or deleted...

I was updating a subtask (I also renamed it), now when it is called, I am getting the following error:

Unable to find ''. It may have been moved, renamed, or deleted. Check the file location and try again. If the problem persists, contact your system administrator.

I renamed the subtask, same error.

I brought in a new task>Start Action, browsed to the location, mapped my variables… same error.

I created a new ‘hello world bot’, and it executed.

Did I break a link somewhere in the control-room file repository?