The "topthink/think-installer" plugin 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. Using version ^7.8 for elasticsearch/elasticsearch ./composer.json has been updated The "topthink/think-installer" plugin 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. Running composer update elasticsearch/elasticsearch Loading composer repositories with package information Updating dependencies Your requirements could not be resolved to an installable set of packages. Problem 1 - topthink/think-installer is locked to version v2.0.0 and an update of this package was not requested. - topthink/think-installer v2.0.0 requires composer-plugin-api ^1.0 -> found composer-plugin-api[2.0.0] but it does not match the constraint. Problem 2 - topthink/think-installer v2.0.0 requires composer-plugin-api ^1.0 -> found composer-plugin-api[2.0.0] but it does not match the constraint. - topthink/think-worker v2.0.12 requires topthink/think-installer ^2.0 -> satisfiable by topthink/think-installer[v2.0.0]. - topthink/think-worker is locked to version v2.0.12 and an update of this package was not requested. Use the option --with-all-dependencies to allow upgrades, downgrades and removals for packages currently locked to specific versions. You are using a snapshot build of Composer 2, which some of your plugins seem to be incompatible with. Make sure you update your plugins or report an issue to them to ask them to support Composer 2. To work around this you can run Composer with --ignore-platform-req=composer-plugin-api, but this may result in broken plugins and bigger problems down the line. Installation failed, reverting ./composer.json and ./composer.lock to their original content.
當你遇到這個問題的時候，你要考慮你用的composer.phar版本問題
https://getcomposer.org/download/
不要用最新版本，因為上面提示要1.版本所以，2.版本完全不能使用，不然你就會遇到跟我一樣的問題,最好解決辦法就是將2.降到1.開頭，這個文件是放在php文件目錄下，這個目錄下還有一個文件需要創建composer.cmd 這個文件中需要加入 @php "%~dp0composer.phar" %* 這串文字，還有在Windows是下安裝composer 的時候，需要將php.exe文件路徑放在環境變量中
原文鏈接：https://blog.csdn.net/jachinFang/article/details/107790919