pg_ivm | 1.10 | pg_catalogplpgsql | 1.0 | pg_catalog.
2) show search_path;
"$user" public.
3) \df *.create_immv
pgivm | create_immv | bigint | text, text | func.
Provide the outputs from the above three commands in your response.
See this issue for why this is different now.
Then deal with the fact it is no longer installed to pg_control but instead pgivm. With usual schema qualifications or search_path techniques.
David J.
