Open Curve Error

I am trying to combine all of these curves so that when I use the command “revolve” all the curves will be present all around the object. However, it keeps saying that there is an open curve, but I cannot for the life in me find the error. Any suggestions?
Open_Curve_Error.3dm (32.3 KB)

I see 1 closed curve and 5 closed curves.

What command and select a curve. The response will include if Rhino considers the curve to be open or closed.

A closed curve in Rhino has the start and end in the some location.