Board Thread:Support Requests - Getting Technical/@comment-1439943-20200516201143/@comment-9605025-20200518071203

That is because somehow you copied Template:Documentation as well. Just do as the message says and revert the change. - Edit:

When you got to Special:Export, did you check the box next to "include templates"? If so, then that is how this happened. You will want to delete all the extra templates. You can see what you imported at Special:Log/import.