CI3.1.13 and PHP 8.2

Hey, thanks for your help! I'm having some issues with PHP 8.2. I can't use the index.php file in the public folder, and I'm getting a config error. It looks like index.php is adding '/development' to the config link for some reason.
I'm getting this error message: 'An Error Was Encountered. The configuration file paypal.php does not exist. C:\wamp\www\ci3\application\config/development\paypal.php'

application
public/index.php
system
vendor

https://github.com/volkankaban/ci3

index.php

PHP Code:

<?php

define('ENVIRONMENT', isset($_SERVER['CI_ENV']) ? $_SERVER['CI_ENV'] : 'development');
switch (ENVIRONMENT) {
    case 'development':
        error_reporting(-1);
        ini_set('display_errors', 1);
        break;
    case 'testing':
    case 'production':
        ini_set('display_errors', 0);
        error_reporting(E_ALL & ~E_NOTICE & ~E_DEPRECATED & ~E_STRICT & ~E_USER_NOTICE & ~E_USER_DEPRECATED);
        break;
    default:
        header('HTTP/1.1 503 Service Unavailable.', true, 503);
        echo 'The application environment is not set correctly.';
        exit(1); // EXIT_ERROR
}

$system_path = '../system';
$application_folder = 'application';
$view_folder = '';

if (defined('STDIN')) {
    chdir(dirname(__FILE__));
}
if (($_temp = realpath($system_path)) !== false) {
    $system_path = $_temp.DIRECTORY_SEPARATOR;
} else {
    $system_path = strtr(
                    rtrim($system_path, '/\\'),
                    '/\\',
                    DIRECTORY_SEPARATOR.DIRECTORY_SEPARATOR
            ).DIRECTORY_SEPARATOR;
}
if ( ! is_dir($system_path)) {
    header('HTTP/1.1 503 Service Unavailable.', true, 503);
    echo 'Your system folder path does not appear to be set correctly. Please open the following file and correct this: '.pathinfo(__FILE__, PATHINFO_BASENAME);
    exit(3); // EXIT_CONFIG
}

define('SELF', pathinfo(__FILE__, PATHINFO_BASENAME));
define('BASEPATH', $system_path);
define('FCPATH', __DIR__.DIRECTORY_SEPARATOR.'..');
define('SYSDIR', basename(BASEPATH));
chdir(FCPATH);

if (is_dir($application_folder)) {
    if (($_temp = realpath($application_folder)) !== false) {
        $application_folder = $_temp;
    } else {
        $application_folder = strtr(
                rtrim($application_folder, "/\\"),
                "/\\",
                DIRECTORY_SEPARATOR.DIRECTORY_SEPARATOR
        );
    }
} elseif (is_dir(BASEPATH.$application_folder.DIRECTORY_SEPARATOR)) {
    $application_folder =
            BASEPATH.
            strtr(
                    trim($application_folder, "/\\"),
                    "/\\",
                    DIRECTORY_SEPARATOR.DIRECTORY_SEPARATOR
            );
} else {
    header('HTTP/1.1 503 Service Unavailable.', true, 503);
    echo 'Your application folder path does not appear to be set correctly. Please open the following file and correct this: '.
            self;
    exit(3); // EXIT_CONFIG
}

define('APPPATH', $application_folder.DIRECTORY_SEPARATOR);
if (
        ! isset($view_folder[0]) &&
        is_dir(APPPATH.'views'.DIRECTORY_SEPARATOR)
) {
    $view_folder = APPPATH.'views';
} elseif (is_dir($view_folder)) {
    if (($_temp = realpath($view_folder)) !== false) {
        $view_folder = $_temp;
    } else {
        $view_folder = strtr(
                rtrim($view_folder, "/\\"),
                "/\\",
                DIRECTORY_SEPARATOR.DIRECTORY_SEPARATOR
        );
    }
} elseif (is_dir(APPPATH.$view_folder.DIRECTORY_SEPARATOR)) {
    $view_folder =
            APPPATH.
            strtr(
                    trim($view_folder, "/\\"),
                    "/\\",
                    DIRECTORY_SEPARATOR.DIRECTORY_SEPARATOR
            );
} else {
    header('HTTP/1.1 503 Service Unavailable.', true, 503);
    echo 'Your view folder path does not appear to be set correctly. Please open the following file and correct this: '.
            self;
    exit(3); // EXIT_CONFIG
}
define('VIEWPATH', $view_folder.DIRECTORY_SEPARATOR);
require_once BASEPATH.'core/CodeIgniter.php'; 


See https://www.codeigniter.com/userguide3/l...vironments

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