Fatal error: require(): Failed opening required 'C:\Users\USER\Desktop\pract\web_app/vendor/autoload.php' (include_path='\xampp\php\PEAR') in C:\Users\USER\Desktop\pract\web_app\artisan on line 18

i have been having this error for days now, i will delete my app and create a new one but yet the laravel autoload.php wont be available and it giving me though time.

please does anyone knows how to solve this error Fatal error: require(): Failed opening required 'C:\Users\USER\Desktop\pract\web_app/vendor/autoload.php' (include_path='\xampp\php\PEAR') in C:\Users\USER\Desktop\pract\web_app\artisan on line 18