On click button onReCaptchaSuccess is fired only first ime, the next clicks onReCaptchaSuccess is not fired

[ahmed-bhs]

This my current code :

            ->add('recaptcha', EWZRecaptchaType::class, array(
                'mapped' => false,
                'attr' => array(
                    'options' => array(
                        'theme' => 'light',
                        'type'  => 'image',
                        'size' => 'invisible',              // set size to invisible
                        'defer' => true,
                        'async' => true,
                        'callback' => 'onReCaptchaSuccess', // callback will be set by default if not defined (along with JS function that validate the form on success)
                        'bind' => 'btn_submit',             // this is the id of the form submit button
                        // ...
                    )
                )
            ));

The problem that my js callback function is fired only the first time.