Unknown auth message code 1397113172 when connect to Heroku postgres - postgresql

Question

Thanks reading my issue.
Currently, I am using postgres (hobby-dev) on Heroku and facing this issue every time that I connect to the database.
error: Uncaught (in promise) Error: Unknown auth message code 1397113172
throw new Error(`Unknown auth message code ${code}`);
^
at Connection.handleAuth (connection.ts:197:15)
at Connection.startup (connection.ts:155:16)
at async Pool._createConnection (pool.ts:32:5)
at async pool.ts:61:7
at async Promise.all (index 0)
at async Pool._startup (pool.ts:63:25)
My application using Deno now
import { Pool } from "https://deno.land/x/postgres/mod.ts";
import { config } from "./config.ts";
const port = config.DB_PORT ? parseInt(config.DB_PORT || "") : undefined;
const POOL_CONNECTIONS = 20;
const dbPool = new Pool({
port,
hostname: config.DB_HOST,
user: config.DB_USER,
database: config.DB_NAME,
password: config.DB_PASS
}, POOL_CONNECTIONS);
export { dbPool };
Here is debug screen.
I have found this issue post and it mentioned about lacking ssl. Not sure how to do it on heroku.
I have tried some solutions, even change lib to pg and it still not work. I am very appreciated if any clue or help to fix this issue.
Note:
I read a document on heroku about "Heroku Postgres Connection Pooling is not available for Hobby-tier databases.". Then I switched to use Client with syntax similar like this to connect to Heroku postgres this:
import { Client } from "https://deno.land/x/postgres/mod.ts";
let config;
config = {
hostname: "localhost",
port: 5432,
user: "user",
database: "test",
applicationName: "my_custom_app"
};
// alternatively
config = "postgres://user#localhost:5432/test?application_name=my_custom_app";
const client = new Client(config);
await client.connect();
await client.end();
ref: https://deno-postgres.com/#/