Trello Import Issues

@kolaente
There seems to be some error here: vikunja/trello.go at main - vikunja - Gitea
I’ve set my logs to debug mode and the last thing it says is: [Trello Migration] Downloading card attachment
No Downloaded card attachment like it usually says come after that and no further trello migration logs happen after this point other than saying Ran all migrations successfully.
It seems to say that it ran successfully because it doesn’t log the error at this point: vikunja/trello.go at main - vikunja - Gitea which is the problem here I think. Well, next to the problem that it apparently crashes at some point, but once we know the error I hope we can also fix this crash. I’ll create a PR to log the error.