Fatal error: Uncaught Error: Using $this when not in object context in C:\xampp\htdocs\wp-content\plugins\custom-php-settings\src\Backend\views\cps-settings.php:2 Stack trace: #0 {main} thrown in C:\xampp\htdocs\wp-content\plugins\custom-php-settings\src\Backend\views\cps-settings.php on line 2