Unable to create a Zoho Desk ticket from a call in Zoho CRM

Unable to create a Zoho Desk ticket from a call in Zoho CRM

I want to create a Zoho Desk ticket when a new record is created in the Calls module in Zoho CRM. However, I get the following error message when trying to test & debug: We are unable to setup Zoho CRM. Please try again or contact us for further help