Unable to debug DBI::dbConnect - connection closed unexpectedly by server

[scac_1041]

I am shifting from a UAT environment to production environment,and in both instances I connect to a postgres database using the following code:

con <- DBI::dbConnect(RPostgres::Postgres(), dbname = "my_db", host = "10.10.10.194", port = 5432, user = "my_user", password = "my_password")

Problem:

• While this works in UAT, in Production it throws an error of connection being closed unexpectedly/server terminated abnormally before or while processing request
• I am able to telnet successfully to the host + port
• I am unable to debug and find out why the connection is closed while using DBI

How can I debug and sort this problem out?
Thank you kind people.

[scac_1041]

I ran traceback to see if I can debug a little better. But still unable to run debug and see how each line of code acts/which one throws error...

[scac_1041]

I tried establishing the connection via RJDBC and called traceback() after receiving an error again:

[scac_1041]

Turns out the network security team had implemented a wrong access policy. Once they assigned the correct one to my account, I was able to connect without errors.