Webhook failed. Server returned code 500

Port_worx
Level 2

Webhook failed. Server returned code 500

My integration with gotowebinar.   We are using webhook because it is simulated it was working dine until one day it is giving us Webhook failed. Server returned code 500  https://sponge.io/gotowebinar-simulated-live-events-in-marketo/ 

 

thanks,