It looks like Kabirdas left, @jev were you able to get this resolved? it's similar to this post: SendGrid - Get Request for templates with id - #10 by Alex_ModernFi with @Jack_T:
On that other post I commented how I was "forgetting a return statement" and I see in the example above where Kabirdas had it in, but now when I have that in, I'm getting an error:
