Describe the bug

Multiple error shows if user does not have connect privileges.

To Reproduce

Steps to reproduce the behavior:

1. For any database run below commands with user postgres-

GRANT TEMPORARY ON DATABASE b TO PUBLIC;

GRANT TEMPORARY ON DATABASE b TO postgres;

2. Now connect to the server with another user and try to connect above database.
3. User gets below error.

Expected behavior

Only single error should be shown.