Cassify not passing enough arguments to Jetpack

Hi,

The Cassify plugin is not working fine with jetpack. Once I login I get a blank page, but if I delete the ticket number from the url I can get into the dashboard. We are running on php71, and I have settings in wp-config.php set to accept traffic from a reverse proxy. The php error log shows the php fatal error below:

PHP Fatal error: Uncaught ArgumentCountError: Too few arguments to function Jetpack_Protect_Module::log_successful_login(), 1 passed in /wp-includes/class-wp-hook.php on line 298 and exactly 2 expected in /plugins/jetpack/modules/protect.php:317
Stack trace:
#0 /wp-includes/class-wp-hook.php(298): Jetpack_Protect_Module->log_successful_login(‘MyUsername’)
#1 /wp-includes/class-wp-hook.php(323): WP_Hook->apply_filters(NULL, Array)
#2 /wp-includes/plugin.php(453): WP_Hook->do_action(Array)
#3 /wp-content/plugins/wp-cassify/classes/wp_cassify_utils.php(225): do_action(‘wp_login’, ‘Myusername’)
#4 /wp-content/plugins/wp-cassify/classes/wp_cassify_plugin.php(459): wp_cassify\WP_Cassify_Utils::wp_cassify_auth_user_wordpress(‘Myusername’)
#5 /wp-includes/class-wp-hook.php(298): wp_cassify\WP_Cassify_Plugin->wp_cassify_grab_service_ticket(”)
#6 /wp-includes/class-wp-hook.php(32 in /wp-content/plugins/jetpack/modules/protect.php on line 317

Please help!

Thanks,
Rusul