Error creating ticket from Salesforce


I am using the Salesforce Plus app for integration, but so far it appears to only be working one way.  I am able access Salesforce contacts from within Freshdesk.  However, I am unable to access Freshdesk support tickets from the Salesforce.  

If I try to create a ticket from within SF, I am getting the following error:


Any ideas how to troubleshoot?

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