Regarding postgresql installation on Google Cloud [Error]

Hello,

I am Paul, Kim who utilizing postgresql database in google cloud Debian
linux environment to do my role.

As reading and applying information on postgresql website, regards of
version 10, 13, 14 of postgresql,
- https://www.postgresql.org/download/linux/debian/
- https://wiki.postgresql.org/wiki/Apt
- https://www.postgresql.org/docs/current/supported-platforms.html

Database is normally working well, and I had create User, Grand,
Extension, Function. however, *there are some errors in debian shell log
after installation as following descriptions*

when after set up the configuration files, and environment file, service
files to start server up, the problem occurs even though compatibility is
right.
- *ERROR : function aurora_version() does not exist at character 8*
- HINT : No function matches the given name and argument types. You
might need to add explicit type casts
- STATEMENT : select AURORA_VERSION();

as my research information aurora_version is included in AWS
environment.

I would like to ask your help regards of how to proceed postgresql server
start up on Google Cloud Platform host environment. and what version and
installation method is proper with Debian 10 or 11 version.

Thank you,
Paul.