This is an odd problem I have run into a few times on different Jira Server Instances. I agree that most instance jira is looking for an Add-On that is either disabled or not installed. However, this one is strange in that it shows up with Jira created workflows when you use the project creation wizard on a Jira Software Server v7.2.2 instance.
Anyone have an idea as to the cause or have seen this problem before and have any idea as to the cause?