Thank you both for your answer!, I had also tried with CSS selector:
and the output:
Couldn't fill field "#Email","myUser":
InvalidArgumentException: The current node list is empty.
The same output using: "...['id' => 'Email'].." and "//...input[@type='text']..."
In all examples I found the input are inside a HTML form, in my case I don't have
I checked if I can see the input like:
OK (1 test, 2 assertions)