Your requirements could not be resolved to an installable set of packages. Problem 1 - Root composer.json requires eclipsephp/common dev-main -> satisfiable by eclipsephp/common[dev-main]. - eclipsephp/common dev-main requires bezhansalleh/filament-shield ^3.3 -> found bezhansalleh/filament-shield[3.3.0, ..., 3.x-dev] but it conflicts with your root composer.json require (^4.0). Problem 2 - Root composer.json requires eclipsephp/world-plugin dev-main -> satisfiable by eclipsephp/world-plugin[dev-main]. - eclipsephp/world-plugin dev-main requires bezhansalleh/filament-shield ^3.3 -> found bezhansalleh/filament-shield[3.3.0, ..., 3.x-dev] but it conflicts with your root composer.json require (^4.0).