Warning: chmod(): No such file or directory in C:\xampp\htdocs\LECCION\COMERCIO\documentos\chmod.php on line 2

Fatal error: Uncaught TypeError: Unsupported operand types: string + bool in C:\xampp\htdocs\LECCION\COMERCIO\documentos\chmod.php:3 Stack trace: #0 {main} thrown in C:\xampp\htdocs\LECCION\COMERCIO\documentos\chmod.php on line 3