我需要安装一个使用Symfony的应用程序。 我使用Windows 7 / IIS。
我已安装：
php =>没关系
C:\php --version
PHP 7.3.5 (cli) (built: May 1 2019 13:16:56) ( NTS MSVC15 (Visual C++ 2017) x64
)
Copyright (c) 1997-2018 The PHP Group
Zend Engine v3.3.5, Copyright (c) 1998-2018 Zend Technologies
composer =>没关系
C:\composer --version
Composer version 1.8.5 2019-04-09 17:46:47
但是当我测试时，我在Configuration Checker上出现错误： http://localhost/Projet/web/config.php
MAJOR PROBLEMS
Major problems have been detected and must be fixed before continuing:
Vendor libraries must be installed
Vendor libraries are missing. Install composer following instructions from http://getcomposer.org/. Then run "php composer.phar install" to install them.
我不明白，因为Composer是根据控制台安装的。你能帮我吗？
最诚挚的问候
Arnaud