Packagist/Composer 404

用了 Packagist/Composer 以后出现的问题，该怎么办 取消Packagist/Composer ?? 如何取消 要疯了

[Composer\Downloader\TransportException]
The "http://packagist.phpcomposer.com/p/league/flysystem%24fc50cca3059963ca9a65ad745a730cdb7a9cb595d8aa3c14
c8b88173174f7941.json" file could not be downloaded (HTTP/1.1 404 Not Found)

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1. 键入命令：composer global config

2. 查看 composer 全局配置路径，并打开文件夹

3. 删除文件 config.json

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