Unexpected token: In Json at position 0

Good afternoon:

Receive a cordial greeting, I tell you that we have been creating a form on the https://kobo.humanitarianresponse.info/ platform but we present some inconveniences that we would like to know how to fix.

These are some drawbacks presented:
When loading the form and in the preview this error message is generated. What is this due to?

Hi @jtafur,

Can you validate your form in here ODK - XLSForm Online v2.x and see if there are any syntax errors?


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