Bookly with Paypal has the error when referal

According to your Email before, and http://docs.itthinx.com/document/affiliates-pro/api/referrals/

We modify the Functions.php in my theme as follows:

function my_affiliates_referral( $referral_id, $data ) {
$referral = new Affiliates_Referral();

// appropriate currency code for the referral
$currency = ‘AUD’;

// related post ID, order ID, …
$post_id = $order_id;

$data = array(
‘order_id’ => array(
‘title’ => ‘Order #’,
‘domain’ => ‘affiliates’,
‘value’ => esc_sql( $order_id )
),
‘order_total’ => array(
‘title’ => ‘Total’,
‘domain’ => ‘affiliates’,
‘value’ => esc_sql( $net_amount )
),
‘order_currency’ => array(
‘title’ => ‘Currency’,
‘domain’ => ‘affiliates’,
‘value’ => esc_sql( $currency )
)
);

$r = new Affiliates_Referral_WordPress();
$description = sprintf( ‘Affiliate #%s’, $affiliateId );
$r->evaluate(
$post_id,
$description,
$data,
$net_amount,
null,
$currency,
null,
‘sale’
);

}
add_action( ‘affiliates_referral’, ‘my_affiliates_referral’ );

and we also modify the file at wp-content\plugins\bookly-responsive-appointment-booking-tool\frontend\modules\booking\ajax.php

public static function renderComplete()
{
$userData = new Lib\UserBookingData( self::parameter( ‘form_id’ ) );
if ( $userData->load() ) {
$progress_tracker = self::_prepareProgressTracker( Steps::DONE, $userData );
$error = self::parameter( ‘error’ );
if ( $error == ‘appointments_limit_reached’ ) {
$response = array(
‘success’ => true,
‘html’ => self::renderTemplate( ‘8_complete’, array(
‘progress_tracker’ => $progress_tracker,
‘info_text’ => InfoText::prepare( Steps::DONE, Lib\Utils\Common::getTranslatedOption( ‘bookly_l10n_info_complete_step_limit_error’ ), $userData ),
), false ),
);
} else {
$payment = $userData->extractPaymentStatus();
do {
if ( $payment ) {
switch ( $payment[’status’] ) {
case ‘processing’:
$info_text = InfoText::prepare( Steps::DONE, Lib\Utils\Common::getTranslatedOption( ‘bookly_l10n_info_complete_step_processing’ ), $userData );
break ( 2 );
}
}
$info_text = InfoText::prepare( Steps::DONE, Lib\Utils\Common::getTranslatedOption( ‘bookly_l10n_info_complete_step’ ), $userData );
} while ( 0 );

do_action(‘affiliates_referral’);

$response = array(
‘success’ => true,
‘html’ => self::renderTemplate( ‘8_complete’, array(
‘progress_tracker’ => $progress_tracker,
‘info_text’ => $info_text,
), false ),
‘final_step_url’ => Lib\Proxy\Pro::getFinalStepUrl(),
);
}
} else {
$response = array( ‘success’ => false, ‘error’ => Errors::SESSION_ERROR );
}
$userData->sessionSave();

// Output JSON response.
wp_send_json( $response );
}

Then Yesterday, the error from email:
Error Details
=============
An error of type E_ERROR was caused in line 347 of the file /www/wwwroot/sydney.qingscleaning.com/wp-content/themes/sydney/functions.php. Error message: Uncaught ArgumentCountError: Too few arguments to function my_affiliates_referral(), 1 passed in /www/wwwroot/sydney.qingscleaning.com/wp-includes/class-wp-hook.php on line 288 and exactly 2 expected in /www/wwwroot/sydney.qingscleaning.com/wp-content/themes/sydney/functions.php:347
Stack trace:
#0 /www/wwwroot/sydney.qingscleaning.com/wp-includes/class-wp-hook.php(288): my_affiliates_referral(‘2’)
#1 /www/wwwroot/sydney.qingscleaning.com/wp-includes/class-wp-hook.php(310): WP_Hook->apply_filters(”, Array)
#2 /www/wwwroot/sydney.qingscleaning.com/wp-includes/plugin.php(465): WP_Hook->do_action(Array)
#3 /www/wwwroot/sydney.qingscleaning.com/wp-content/plugins/affiliates-pro/lib/ext/wordpress/class-affiliates-referral-wordpress.php(82): do_action(‘affiliates_refe…’, ‘2’, Array)
#4 /www/wwwroot/sydney.qingscleaning.com/wp-content/plugins/affiliates-pro/lib/ext/wordpress/class-affiliates-referral-wordpress.php(53): Affiliates_Referral_WordPress->add_referrals(Array, NULL, ‘User Registrati…’, Array, ’10’, NU

Can you help us to settle down it ?