Error while saving form with empty checkboxes

hi,

I inserted checkboxes into a form that are required fields. The user will be asked to select one or more of the checkboxes. I created a rule to have these checkbox fields become unrequired as soon as a box is checked (see rule below). When I try to save and close the form I receive the error message below.  Can someone please help in trouble shooting this error?  Is the 'required' field condition causing this error?

Checkbox Fields:

Form Error:

Dynamic Form Rule:
thank you,
Sangeeta

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Sangeeta Ram
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