Fatal error: Uncaught exception 'Exception' with message 'Composer autoloader could not be found. Install dependencies with `composer install` and try again.' in C:\xampp\htdocs\esales2\vendor\phpoffice\phpspreadsheet\src\Bootstrap.php:22 Stack trace: #0 {main} thrown in C:\xampp\htdocs\esales2\vendor\phpoffice\phpspreadsheet\src\Bootstrap.php on line 22