Some, but not all of the curve end points touch

I am quite new to Rhino and I am trying to loft a surface together but I get this message “Some, but not all of the curve end points touch.” I have done my best to check manually to try and figure out which is the problematic curve end points but I have been unsuccessful. Any advice here would help. Thank you.
itertation 2 sushi.3dm (52.8 KB)

CrvStart and CrvEnd can be used to mark the ends of curves, or turn on control points or edit points

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