Hi I’m trying to convert some v1 flows to v2 - just some simple snowflake queries at the moment but I sometimes get this error:

RuntimeError: Set changed size during iteration
Worker information:
    Approximate queue length: 0
    Pending log batch length: 0
    Pending log batch size: 0

I’m not trying to do anything with async but that appears to be where this is coming from (I guess it’s used via the

snowflake-prefect

integration?

hmm, if you're just running stuff locally and you're comfortable with doing so, I think you could try

prefect orion database reset -y

here

thanks @Nate I tried this but it ran into an issue

sqlalchemy.exc.OperationalError: (sqlite3.OperationalError) duplicate column name: type
[SQL: ALTER TABLE block_schema ADD COLUMN type VARCHAR]

yep okay, so I would go ahead and run

rm -rf ~/.prefect/orion.db

and then try and reset the database again