Error in preview and redeploy and other errors

Hi
I have problems with my questionnaire form.
First, in the preview in different questions, the option “others” was reported 3-4 times but when editing the form it was all ok, just 1 option for “others”.
Now
If I click “redeploy” I get this response:
Unexpected KoBoCAT error 400: {“detail”:"[row : 10] List name not in choices sheet: iy1cf35"}
and If i click “preview” I get:
Error generating preview
u’iy1cf35’

What can I do?