Surface morph failing on ellipsoid

Why does surface morph fail on the ellipsoid part ??

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try 4 second_fr low 1 (6.6 KB)
FR-Low1_st_dt_ft.txt (10.1 MB)
model correct (1).igs (83.0 KB)

I have uploaded the gh file and the text file used for making the first surface and the submarine model which is the target surface

Please check what i have uploaded

I have tried using sporph and it worked once but now i cant remember how i have done it