Problem connecting to ducklake

[klonuo]

I'm trying to connect to existing ducklake, with metadata.ducklake as duckdb metadata catalog:

type: connector
driver: duckdb
init_sql: |
  LOAD ducklake;
  CREATE SECRET (
      TYPE R2,
      KEY_ID '<redacted>',
      SECRET '<redacted>',
      ENDPOINT '<redacted>.r2.cloudflarestorage.com',
      URL_STYLE 'path',
      USE_SSL 1
  );
  ATTACH 'ducklake:metadata.ducklake' AS lake;

and get error:

failed to create model: 
Binder Error: Failed to attach DuckLake MetaData "__ducklake_metadata_lake" at path + "metadata.ducklake"Unique file handle conflict: 
Cannot attach "__ducklake_metadata_lake" - the database file "metadata.ducklake" is already attached by database "__ducklake_metadata_lake"

If I execute the "init_sql" stetement in duckdb cli, I can query the catalog fine SELECT * FROM lake.measurements

I tried many other approaches while none worked.

Is this maybe not supported?