In the Service Desk customer portal, the Xporter dialog doesn't display the templates

With Xporter 6.9.10.1 in the Service Desk customer portal, the Xporter dialog doesn't display the templates.

Steps to reproduce:

• Install the Xporter 6.9.10.1
• On the Xporter integrations page active Xporter for tickets Details
• Add a template for this scope
• Go to the Service Desk customer portal
• Go to ticket details
• click on Xporter

actual result:

• The dialog opens and it stays infinity loading 

expected result:

• The dialog opens and shows all the templates available