I've got a bit of a head scratcher. This seems like a library bug, but I can't believe this would have gone unnoticed.

dagster._check.ParameterCheckError: Param "partition_mapping" is not a PartitionMapping. Got <class 'dagster._core.definitions.partition_mapping.AllPartitionMapping'> which is type <class 'abc.ABCMeta'>.

The relevant code in the asset is:

@asset(
    required_resource_keys={"duckdb"},
    ins={
        "asset1": AssetIn(partition_mapping=AllPartitionMapping),
        "asset2": AssetIn(partition_mapping=AllPartitionMapping),
    },
)

I think you might need to fully instantiate the

AllPartitionMapping

@asset(
    required_resource_keys={"duckdb"},
    ins={
        "asset1": AssetIn(partition_mapping=AllPartitionMapping()), # added ()
        "asset2": AssetIn(partition_mapping=AllPartitionMapping()), # added ()
    },
)