conposer update 出现 zlib_decode (): data error

Failed to decode response: zlib_decode(): data error
Retrying with degraded mode, check https://getcomposer.org/doc/articles/troub... for more info

[Composer\Downloader\TransportException]
The "https://mirrors.aliyun.com/composer/p/prov...
db3.json" file could not be downloaded (HTTP/1.1 404 Not Found)
提示阿里云的这个国内镜像404，不知道是不是阿里那边出现了问题。
关于网络上的统一解答：
composer self-update 尝试过，没有报错，但是安装插件又会出现上面问题，无效！
还有的甚至关闭ipv6的，未尝试。估计不会是这样的问题造成的
还有修改php.ini 文件的：
zlib.output_compression =On 默认Off
zlib.output_compression_level = 5 默认 ; 注销状态
修改php.ini也无效。
有的还说是网络问题，我已经更新多次，应该不是网络一时的问题。
修改为国内镜像：
composer config -g repo.packagist composer <https://mirrors.aliyun.com/composer/ 阿里云镜像(也是laravel5.8教程的那个镜像)：无效
老镜像：
composer config -g repo.packagist composer https://packagist.phpcomposer.com 超级慢
中国镜像：
composer config repo.packagist composer https://packagist.laravel-china.org
[Composer\Downloader\TransportException]
The "https://packagist.laravel-china.org/packag..." file could not be downloaded: SSL operation failed with code 1.
OpenSSL Error messages:
error:14090086:SSL routines:ssl3_get_server_certificate:certificate verify failed
Failed to enable crypto
failed to open stream: operation failed
openssl 未开启？？？ 反正是无效。
有没有大佬知道以上造成问题的原因？？