Failing to submit task form

Camunda 7 Topics Discussion & Questions
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1

I am using a Camunda form like this

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image800×342 9.93 KB

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image910×655 19.4 KB

When I try to complete the user task in tasklist, it gives this error
An error happened while submitting the task form :
Cannot submit task form bcf55248-3d4b-11ef-92d2-005056027c2e: Unsupported value type ‘Json’

Can you anybody help me understand what I am missing?

Thanks.