validation error not displaying screen flow

I have a date validation on a screen flow Needed_By>TODAY()+13 saying that the needed by date has to be in two weeks.. (there is also a default on the field of exactly two weeks)

I have no issue if i leave the default or make the default a later date, but when I make the date sooner, instead of showing the validation error message it gives me a fault:

Error element Request_Form (FlowScreen). The "6" value is a Text data type that's assigned to a field with an incompatible Number data type. Assign the value to a field with a compatible data type. #Flow #Screen Flow #Validation Rule