`min items` server side validation error

wappler 5.2.0
mac os monterey

config:


on client side min items was chosen as 1 on a group of checkbox.

on form submission, getting error one choosing only one item:

on choosing 2 or more items, this server side erorr goes away.
but expectation is that on choosing only 1 item server should accept becuase that is the config done.

please fix.

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