下载安装包后访问域名，提示Vendor autoload is not found. Please run ‘composer install’ under application root directory.
到目录下面去composer install，提示：
Loading composer repositories with package information
Installing dependencies (including require-dev) from lock file
Package operations: 175 installs, 0 updates, 0 removals
- Installing magento/magento-composer-installer (0.1.13): Loading from cache
Plugin installation failed, rolling back - Removing magento/magento-composer-installer (0.1.13)
[RuntimeException]
Could not delete /home/magento/site/vendor/magento/magento-composer-instal
ler/src/MagentoHackathon:
install [–prefer-source] [–prefer-dist] [–dry-run] [–dev] [–no-dev] [–no-custom-installers] [–no-autoloader] [–no-scripts] [–no-progress] [–no-suggest] [-v|vv|vvv|–verbose] [-o|–optimize-autoloader] [-a|–classmap-authoritative] [–apcu-autoloader] [–ignore-platform-reqs] [–] []…