paragraphfield in an interface is considering enters, tabs and spaces only as a value

Hi All,

I have a paragraph field (* Required field) in an interface. When I input Enters or Spaces or Tabs only and no other characters it is consider as a value and not firing the validation error. For user it looks like empty values and validation didn't fired. Need a validation so that Enters or Spaces or Tabs only are not considered as va[lues.

a!paragraphField(
.....


validations: ???

......
)

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