Fatal error: Uncaught Error: Interface "PHPExcel_Reader_IReader" not found in C:\xampp\htdocs\electronica\vendor\phpoffice\phpexcel\Classes\PHPExcel\Reader\Abstract.php:36 Stack trace: #0 {main} thrown in C:\xampp\htdocs\electronica\vendor\phpoffice\phpexcel\Classes\PHPExcel\Reader\Abstract.php on line 36