Expecting value: line 1 column 1 (char 0)

Dears,
deploying this form I get the error:

Expecting value: line 1 column 1 (char 0)
dct_nortborders_NEW_v5_forProtCivile.xlsx (285.9 KB)

It was working well yesterday.
Can you support me?
Not clear why.

Thanks,

Welcome to the community, @gvtdgc! Have you validated your XLSForm through this online validator to see if there are any syntax issues?

Thanks for the suggestion, It works

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