Redshift Materialized View: error when creating with glue catalog

Question

I try to create a materialized view via spektrum from an external table in the glue data catalog

CREATE MATERIALIZED VIEW "dev"."public"."table_name" AS
SELECT DISTINCT *
FROM "awsdatacatalog"."my_db"."table_name" 

but I get the following error and have no idea where to start looking for a solution:

Trying to make internal datasharing request for auto mounted catalog. code: 4