@amit1 - Kafka errors are fine, I actually have a task to make that step less noisy as those errors are fine (and expected).
Seems like that failing migration has a bug in it so thanks for reporting! I’ve submitted fix(migrations): Fix backfill_file_type_on_event_attachement by BYK · Pull Request #24236 · getsentry/sentry · GitHub to fix the issue so you can follow the progress from there.