Now that we have a setup up and running, we're having some fun with backfilling relationships: https://gist.github.com/ensonic/e1399b6ea70259997d796973a6aa05e4 I am not sure what the error is trying to tell me (e.g. what is

list[0]

). Tried to search for the error message or parts or in in the github codebase, but no luck so far.