Your requirements could not be resolved to an installable set of packages. Problem 1 - Root composer.json requires hiqdev/hidev-php dev-master -> satisfiable by hiqdev/hidev-php[dev-master]. - hiqdev/hidev-php dev-master requires yiisoft/composer-config-plugin *@dev -> satisfiable by yiisoft/composer-config-plugin[dev-dependabot/composer/yiisoft/files-tw-2.0, dev-dependabot/github_actions/shivammathur/setup-php-2.11.0, dev-dependabot/github_actions/actions/checkout-3, dev-dependabot/github_actions/actions/cache-3.0.1, dev-ga-builds-on-schedule, dev-master, 0.0.1, ..., 0.6.0, 1.0.x-dev (alias of dev-master)]. - yiisoft/composer-config-plugin[0.0.1, ..., 0.4.0] require composer-plugin-api ^1.0 -> found composer-plugin-api[2.6.0] but it does not match the constraint. - yiisoft/composer-config-plugin[dev-dependabot/composer/yiisoft/files-tw-2.0, dev-dependabot/github_actions/shivammathur/setup-php-2.11.0, dev-dependabot/github_actions/actions/checkout-3, dev-dependabot/github_actions/actions/cache-3.0.1, dev-ga-builds-on-schedule, dev-master, 0.5.0, ..., 0.6.0, 1.0.x-dev] require opis/closure 3.6.x-dev@dev -> found opis/closure[dev-master, dev-ffi, 1.0.0, ..., 1.3.x-dev, 2.0.0, ..., 2.4.x-dev, 3.0.0, ..., 3.x-dev, 4.0.0, ..., 4.x-dev (alias of dev-master)] but it does not match the constraint. - yiisoft/composer-config-plugin 1.0.x-dev is an alias of yiisoft/composer-config-plugin dev-master and thus requires it to be installed too.