LARAVEL "mkdir(): No such file or directory" SEND MAIL

I'm trying to send email from laravel, but I keep geting this error:

mkdir(): No such file or directory

The code is:

Mail::send('resetpassword', ['data' => $user], function ($message) use ($user) {
  $message->to($user->email, $user->nome);
  $message->subject("alteração de senha");
});

Can anyone help?