500 Error when creating a template

With the error starting from the generateMapping() function, I'm looking at it and trying to understand what it does. It looks like it's trying to create a template at gathercontent, using a POST at https://api.gathercontent.com/projects/123456/templates. Is that correct and expected? I would expect that it would only read data from gathercontent and create mappings in Drupal, but I'm just learning how this integration and service works.

I am also chatting with support at gathercontent to find out if there is something on their end that can resolve this.

I hadn't enabled the essential module, gathercontent_ui, and so was mistakenly using gathercontent_upload_ui. Using the regular mapping UI, I am able to create mapping and then import content after that.

Automatically closed - issue fixed for 2 weeks with no activity.