Problem of rotation

Hello, I hope you’re doing well! I’m trying to sweep a curve along this path, but as you can see at this point, it’s glitching. I haven’t been able to resolve this issue yet. I’m almost there. What could I change to make the script work? Thank you very much.
231007 Mirror Gap .gh (10.8 KB)


231007 Mirror Gap_re.gh (12.0 KB)

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Thank you so much !