Unable to collect data. Shows error message in Enketo

I want to ask about calculate: once(uuid(7)) error.

I made it using xlsform, it was successfully tested on odk, but when trying to upload it on Kobo there was an error as follows.

Loading Error

Error occured during the loading of this form. It is recommended not to use this form for data entry until this is resolved.

with the link to this page and the error message below:

  • FormLogicError: Could not evaluate: uuid(7), message: Function “{}uuid” expects ().


can anyone help me solve it?

Can you send me the screenshot of the specific formula that you have used that is giving you these errors?


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