@Marvin I am trying to create a custom block with a SecretString - exactly like the documentation shows - however when trying to register the block I get this error: `RuntimeError: no validator found for <class 'pydantic.types.SecretStr'>, see

arbitrary_types_allowed

in Config`

It seems like you're having trouble with a

RuntimeError

related to a

SecretStr

in a custom block. Unfortunately, the information I found doesn't directly address your issue. However, I found a discussion on using a Secret Block and another discussion on fixing a

RuntimeError

. It might be helpful to check these resources or provide more context about your issue. If you're still having trouble, I recommend reaching out to the Prefect community or support for more specific help.