The "fxp/composer-asset-plugin" plugin (installed globally) was skipped because it requires a Plugin API version ("^1.0") that does not match your Composer installation ("2.0.0"). You may need to run composer update with the "--no-plugins" option.
1.纯comnposer的问题，可以自行搜索解决
2.一般黄色警告问题不大,您自己google查一查
3.执行一下：composer self-update
composer self-update