Override OCI_CRED_EXT error in laravel-oci8 by yajra

Oci8ServiceProvider.php

<?php

namespace App\Providers;

use Illuminate\Database\Connection;
use Yajra\Oci8\Oci8ServiceProvider as ServiceProvider;
use App\Connectors\OracleConnector as Connector;
use Yajra\Oci8\Oci8Connection;

class Oci8ServiceProvider extends ServiceProvider
{
    /**
     * Register the service provider.
     *
     * @return void
     */
    public function register()
    {
        if (file_exists(config_path('oracle.php'))) {
            $this->mergeConfigFrom(config_path('oracle.php'), 'database.connections');
        } else {
            $this->mergeConfigFrom(__DIR__ . '/../config/oracle.php', 'database.connections');
        }

        Connection::resolverFor('oracle', function ($connection, $database, $prefix, $config) {
            $connector = new Connector();
            $connection = $connector->connect($config);
            $db = new Oci8Connection($connection, $database, $prefix, $config);

            if (!empty($config['skip_session_vars'])) {
                return $db;
            }

            // set oracle session variables
            $sessionVars = [
                'NLS_TIME_FORMAT'         => 'HH24:MI:SS',
                'NLS_DATE_FORMAT'         => 'YYYY-MM-DD HH24:MI:SS',
                'NLS_TIMESTAMP_FORMAT'    => 'YYYY-MM-DD HH24:MI:SS',
                'NLS_TIMESTAMP_TZ_FORMAT' => 'YYYY-MM-DD HH24:MI:SS TZH:TZM',
                'NLS_NUMERIC_CHARACTERS'  => '.,',
            ];

            // Like Postgres, Oracle allows the concept of "schema"
            if (isset($config['schema'])) {
                $sessionVars['CURRENT_SCHEMA'] = $config['schema'];
            }

            if (isset($config['session'])) {
                $sessionVars = array_merge($sessionVars, $config['session']);
            }

            if (isset($config['edition'])) {
                $sessionVars = array_merge(
                    $sessionVars,
                    ['EDITION' => $config['edition']]
                );
            }

            $db->setSessionVars($sessionVars);

            return $db;
        });
    }


    /**
     * Bootstrap services.
     *
     * @return void
     */
    public function boot()
    {
        //
    }
}

OracleConnector.php

<?php

namespace App\Connectors;

use Illuminate\Support\Arr;
use Yajra\Oci8\Connectors\OracleConnector as Connector;

class OracleConnector extends Connector
{
    /**
     * Establish a database connection.
     *
     * @param array $config
     * @return PDO
     */
    public function connect(array $config)
    {
        $tns = ! empty($config['tns']) ? $config['tns'] : $this->getDsn($config);

        $options = $this->getOptions($config);

        if (defined('OCI_CRED_EXT') && Arr::get($options, 'session_mode') === OCI_CRED_EXT) {
            // External connections can only be used with user / and an empty password
            $config['username'] = '/';
            $config['password'] = null;
        }

        $connection = $this->createConnection($tns, $config, $options);

        return $connection;
    }
}