你好，当我写作曲家更新它不起作用我有这个错误： 我的作曲家：https://pastebin.com/WNtMe2qJ
问题1：
- Installation request for symfony/http-kernel dev-master -> satisfiable by symfony/http-kernel[dev-master].
- symfony/http-kernel dev-master requires symfony/error-catcher ^4.4|^5.0 -> satisfiable by symfony/error-catcher[4.4.x-dev] but these conflict with your requirements or minimum-stability.
问题2：
- symfony/web-server-bundle dev-master requires symfony/http-kernel ^4.4|^5.0 -> satisfiable by symfony/http-kernel[4.4.x-dev, 5.0.x-dev].
- symfony/web-server-bundle dev-master requires symfony/http-kernel ^4.4|^5.0 -> satisfiable by symfony/http-kernel[4.4.x-dev, 5.0.x-dev].
- symfony/http-kernel 5.0.x-dev requires symfony/error-catcher ^4.4|^5.0 -> satisfiable by symfony/error-catcher[4.4.x-dev] but these conflict with your requirements or minimum-stability.
- symfony/http-kernel 4.4.x-dev requires symfony/error-catcher ^4.4|^5.0 -> satisfiable by symfony/error-catcher[4.4.x-dev] but these conflict with your requirements or minimum-stability.
- symfony/http-kernel 4.4.x-dev requires symfony/error-catcher ^4.4|^5.0 -> satisfiable by symfony/error-catcher[4.4.x-dev] but these conflict with your requirements or minimum-stability.
- Installation request for symfony/web-server-bundle dev-master -> satisfiable by symfony/web-server-bundle[dev-master].
该如何解决？