I'm trying to build an application using ReactJS and Wordpress Rest Api. I'm using JWT Auth Plugin and it works great but if I try to create a new user without being logged I get this error below:

{
  "success": false,
  "statusCode": 403,
  "code": "jwt_auth_no_auth_header",
  "message": "Authorization header not found.",
  "data": []
}

I understand that I need a token to make POST requests but if it's a new user that is trying to register on my application, how can I generate a token for a user that doesn't exist yet?

Here is the code of my user_post.php:

<?php 

function api_user_post($request){

    $email = sanitize_email($request['email']);
    $senha = $request['senha'];
    $nome = sanitize_text_field($request['nome']);
    $user_exists = username_exists($email);
    $email_exists = email_exists($email);


    if(!$user_exists && !$email_exists && $email && $senha) {
        $user_id = wp_create_user($email, $senha, $email);
        
        $response = array(
            'ID' => $user_id,
            'display_name' => $nome,
            'first_name' => $nome,
            'role' =>  'professor'
        );

        wp_update_user($response);   
        

    }else{
        $response = new WP_Error('email', 'Email já cadastrado.', array('status' => 403) );
    }
    return rest_ensure_response($response);
}

function resgister_api_user_post(){
    register_rest_route('api', '/usuario', array(
        array(
            'methods' => WP_REST_Server::CREATABLE,
            'callback' => 'api_user_post',
        ),
    ));
}

add_action('rest_api_init', 'resgister_api_user_post');

?>