Fatal error: Uncaught RESO\Error\Api: RESO\OpenIDConnect::requestAccessToken()

[eseopros]

< Fatal error: Uncaught RESO\Error\Api: RESO\OpenIDConnect::requestAccessToken() >

I downloaded the class as referenced on : https://trestle-documentation.corelogic.com/webapi-libraries.html#php

I decided to test out example-cli.php
rets/examples/cli-example/example-cli.php

I placed the values in config.php

// API authentication URL
$api_auth_url = "https://trestle.corelogic.com/BKR/Connections";

// API token URL
$api_token_url = "https://api-prod.corelogic.com/trestle/oidc/connect/token";

// API data request (web) URL
$api_request_url = "https://api-prod.corelogic.com/trestle/odata/";

$auth_username = I placed the login user here

// API password
$auth_password = I placed the login password here

$client_id = "e89d3c24_beaf_4fed_84d1_9ffa0df39f2d";

$client_secret = "8e7407419ad0443887dc5fdd9c279941";

// Redirect URI
$redirect_uri = "https://www.thedentallist.com/rets";

// Scope
$scope = "WebAPI";

if(file_exists(dirname(FILE)."/_config.php")) {
require_once(dirname(FILE) . "/_config.php");
}

I am testing example-cli.php via the link below

Link : https://thedentallist.com/rets/examples/cli-example/example-cli.php

Error

#!/usr/bin/env php [2023-01-04T01:10:35+00:00] Setting RESO API client id to 'e89d3c24_beaf_4fed_84d1_9ffa0df39f2d'. [2023-01-04T01:10:35+00:00] Setting RESO API client secret. [2023-01-04T01:10:35+00:00] Setting RESO API auth URL to 'https://trestle.corelogic.com/BKR/Connections'. [2023-01-04T01:10:35+00:00] Setting RESO API token URL to 'https://api-prod.corelogic.com/trestle/oidc/connect/token'. [2023-01-04T01:10:35+00:00] Setting RESO API request URL to 'https://api-prod.corelogic.com/trestle/odata/'. [2023-01-04T01:10:35+00:00] Initiating RESO API authorization. [2023-01-04T01:10:36+00:00] Sending authorization request to retrieve access token. [2023-01-04T01:10:36+00:00] EXCEPTION: Failed to obtain access token.
Fatal error: Uncaught RESO\Error\Api: Failed to obtain access token. in /var/www/vhosts/thedentallist.com/httpdocs/rets/lib/OpenIDConnect.php:132 Stack trace: #0 /var/www/vhosts/thedentallist.com/httpdocs/rets/examples/cli-example/example-cli.php(24): RESO\OpenIDConnect::requestAccessToken() #1 {main} thrown in /var/www/vhosts/thedentallist.com/httpdocs/rets/lib/OpenIDConnect.php on line 132

Any suggestions