In the past somewhere there was another place to input the chart name. Right now I cannot find in v184.108.40.206
Further tests here duplicate the error when the name is inserted as you have. Go back to that and delete the name so it is empty. It is NOT the needed name. With the name field empty get the name from the Navigator. Use that name. Then you can change the name to what you currently have. Should be similar to my
Object 1. Will continue to search for the proper location of this internal name.