Card is Valid, but return invalid.

[pedroanalista]

Card Number: 6505 0703 1003 9904
Issuing Bank: CAIXA
Card Brand: DISCOVER
Card Type: CREDIT
Card Level: PERSONAL

Please check card valid in https://www.bincodes.com/creditcard-checker/

Run:

let card_number = "6505 0703 1003 9904"
var numberValidation = valid.number(card_number.trim().substring(0, 4));

Result:

{
card: null,
isPotentiallyValid: true,
isValid: false,
}