以下这个错误是由于在使用 Composer 下载依赖包时，遇到了 SSL 证书问题。具体来说，Composer 在尝试从 https://repo.packagist.org 下载 topthink/think-installer.json 文件时，遇到了一个自签名证书（self-signed certificate），导致 SSL 验证失败。[ComposerDownloaderTransportException (100)]curl error 60 while downloading https://repo.packagist.org/p2/topthink/think-installer.json: SSL certificate problem: self signed certificate in certificate chain

composer设置成阿里云镜像

yii-composer-update-or-install-composer-asset-plugin-failure，异常情况报告：在yii框架下安装依赖包,提示版本兼容问题，如果在PHP环境没有问题的情况下，请查看composer版本问题，过高或者过低

Fatal error: Allowed memory size of 1610612736 bytes exhausted (tried to allocate 4096 bytes) in phar://C:/composer/composer.phar/src/Composer/DependencyResolver/Solver.php on line 223Check https://getcomposer.org/doc/articles/troubleshooting.md#memory-limit-errors for more info on how to handle out of memory errors.

composer self-update 出现 [ErrorException] zlib_decode(): data error提示的解决!composer self-update 出现 [ErrorException] zlib_decode(): data error提示的解决!composer self-update 出现 [ErrorException] zlib_decode(): data error提示的解决!