pg_restore error on function

[Post Gresql]

Hello

I first successfully ran

pg_dump -U postgres -b -E UTF8 -f my_dump --format=custom -n my_schema 
--no-owner -v my_db

but then

pg_restore --single-transaction -v -U postgres -O -e -d my_other_db my_dump

failed with

pg_restore: connecting to database for restore
pg_restore: creating FUNCTION "my_schema.update_b()"
pg_restore: [archiver (db)] Error while PROCESSING TOC:
pg_restore: [archiver (db)] Error from TOC entry 7142; 1255 8618854 FUNCTION 
update_b() previous_owner
pg_restore: [archiver (db)] could not execute query: ERROR:  schema my_schema" 
does not exist
    Command was: CREATE FUNCTION "my_schema".update_b() RETURNS void
    LANGUAGE plpgsql
    AS $$
            BEGIN
            PERFORM pg_advisory_xact_lock(1);

            INSERT INTO ...;
            END;
            $$;


This is PG version 10.19

Is there a solution for this (apart from upgrading to a newer PG version)?

The only workaround I can think of is to dump in plain text and then edit the 
dump file.