报错信息No composer.lock file present. Updating dependencies to latest instead of installing from lock file. See https://getcomposer.org/install for more information.Loading composer repositories with package information Updating dependencies Your requirements could not be resolved to an installable set of packages. Problem 1 - Root composer.json requires fideloper/proxy, it could not be found in any version, there may be a typo in the package name. Problem 2 - Root composer.json requires laravel/framework, it could not be found in any version, there may be a typo in the package name. Problem 3 - Root composer.json requires laravel/tinker, it could not be found in any version, there may be a typo in the package name. Problem 4 - Root composer.json requires beyondcode/laravel-dump-server, it could not be found in any version, there may be a typo in the package name. Problem 5 - Root composer.json requires filp/whoops, it could not be found in any version, there may be a typo in the package name. Problem 6 - Root composer.json requires fzaninotto/faker, it could not be found in any version, there may be a typo in the package name. Problem 7 - Root composer.json requires mockery/mockery, it could not be found in any version, there may be a typo in the package name. Problem 8 - Root composer.json requires nunomaduro/collision, it could not be found in any version, there may be a typo in the package name. Problem 9 - Root composer.json requires phpunit/phpunit, it could not be found in any version, there may be a typo in the package name.Potential causes: - A typo in the package name - The package is not available in a stable-enough version according to your minimum-stability setting see <https://getcomposer.org/doc/04-schema.md#minimum-stability> for more details. - It's a private package and you forgot to add a custom repository to find it Read <https://getcomposer.org/doc/articles/troubleshooting.md> for further common problems.PHPCopy方法一composer install --ignore-platform-reqs //或者 composer update --ignore-platform-reqsPHPCopy方法二//切换源阿里镜像:composer config -g repo.packagist composer https://mirrors.aliyun.com/composer/Laravel镜像: composer config -g repo.packagist composer https://packagist.laravel-china.org中国全量镜像:composer config -g repo.packagist composer https://packagist.phpcomposer.com//查询是否更换成功composer config -g -l//再执行composer install --ignore-platform-reqs //或者 composer update --ignore-platform-reqsPHPCopy报错信息In PluginManager.php line 738: kylekatarnls/update-helper contains a Composer plugin which is blocked by your allow-plugins config. You may add it to the list if you consider it safe. You can run "composer config --no-plugins allow-plugins.kylekatarnls/update-helper [true|false]" to enable it (true ) or disable it explicitly and suppress this exception (false) See https://getcomposer.org/allow-pluginsPHPCopy解决composer install --ignore-platform-reqs--no-pluginsPHPCopy