مشكلة لدي في تنصيب Laravel
 

<div>السلام عليكم

عند تنصيب Laravel وعند مرحلة اعطاء امر كي يتحول على السيرفر الداخلي

تظهر لي هذه المشكلة :


c:\xampp\htdocs\bestBlog>php artisan serve
PHP Warning: require(C:\xampp\htdocs\bestBlog/vendor/autoload.php): failed to o
pen stream: No such file or directory in C:\xampp\htdocs\bestBlog\artisan on lin
e 18

Warning: require(C:\xampp\htdocs\bestBlog/vendor/autoload.php): failed to open s
tream: No such file or directory in C:\xampp\htdocs\bestBlog\artisan on line 18
PHP Fatal error: require(): Failed opening required 'C:\xampp\htdocs\bestBlog/v
endor/autoload.php' (include_path='C:\xampp\php\PEAR') in C:\xampp\htdocs\bestBl
og\artisan on line 18

Fatal error: require(): Failed opening required 'C:\xampp\htdocs\bestBlog/vendor
/autoload.php' (include_path='C:\xampp\php\PEAR') in C:\xampp\htdocs\bestBlog\ar
tisan on line 18

c:\xampp\htdocs\bestBlog>

فما هو الحل ؟