Error with email class in CI 3.1.8

@Paradinight

thanks for your highlight I totally forgot that I made that mistake. BUT now I have another issue haha which is valid_mail
Now because of the form validation, I get an error but the email is valid [email protected]

Did you write valid_mail or valid_email? Error message?

im using valid_email like this

PHP Code:

$this->form_validation->set_rules('email', 'lang:valid_email', 'trim|valid_email|is_unique[USERS.EMAIL]|required'); 


Codeigniter use filter_var does not check if the domain existse. The email is valid. What is the error?
Does the email exist in the user table?

The error is say the email should be a valid email address