Why cant I send pdf file wit smtpJS?

Question

I attached a .png, and everything works well. When I attach a .pdf file, the email doesn't come through.

My code:

Email.send({
    SecureToken: "xxxxx",
    To:Array(mail,'something@something.com') ,
    From: "xxxx",
    Subject:"xxxx",
    Body: 'xxxx',
    Attachments : [{
        name : "xxxx",
        path: "https://thepathforthepdf."
 }]
})

What is wrong?