operator class "xxx" does not exist for access method "yyy"

Hello, I encountered some errors while using PostgreSQL. It seems that the
information in the pg_opclass cannot be found by syscache. Can you please
let me know if this is a bug and whether this syntax will be supported in
the future?

error:

*postgres=# CREATE TEMP TABLE issue(c0 FLOAT , c1 money NULL) PARTITION BY
HASH((issue.c0)cdbhash_float8_ops);ERROR: operator class
"cdbhash_float8_ops" does not exist for access method "hash"*

version:

*
version--------------------------------------------------------------------------------------------------------
PostgreSQL
16devel on x86_64-pc-linux-gnu, compiled by gcc (Ubuntu
7.5.0-3ubuntu1~18.04) 7.5.0, 64-bit(1 row)*

Regards,
Tianyi Gao