Subject: Assistance Required: Adding Multiple Libraries to shared_preload_libraries in postgresql.conf

Dear Postgres Community,

I hope this message finds you well. I am reaching out regarding an issue
I've encountered while attempting to configure the shared_preload_libraries
variable in the postgresql.conf file to include multiple libraries.

The problem arises when I try to add both the 'citus' and
'pg_stat_statement' libraries to the shared_preload_libraries variable.
Here is the configuration snippet I attempted:

shared_preload_libraries = 'citus', 'pg_stat_statement'

Upon restarting the server after making this adjustment, I encountered an
error related to socket connection, which indicates that there might be an
issue with how I'm specifying multiple libraries.

Could you please provide guidance on the correct syntax or approach for
adding multiple libraries to the shared_preload_libraries variable?
Additionally, any insights into why this particular configuration might be
causing a socket connection error would be greatly appreciated.

Thank you very much for your time and assistance. I look forward to hearing
from you soon.

Best regards,
Uzair Rehman