Your requirements could not be resolved to an installable set of packages. Problem 1 - Root composer.json requires symfony/finder ^7.1 -> satisfiable by symfony/finder[v7.1.0-BETA1, ..., 7.2.x-dev]. - symfony/finder[v7.1.0-BETA1, ..., 7.2.x-dev] require php >=8.2 -> your php version (8.1.29) does not satisfy that requirement. Problem 2 - ramsey/composer-repl-lib 1.2.0 requires symfony/finder ^6.0 -> found symfony/finder[v6.0.0-BETA1, ..., 6.4.x-dev] but it conflicts with your root composer.json require (^7.1). - symfony/finder[v7.1.0-BETA1, ..., 7.2.x-dev] require php >=8.2 -> your php version (8.1.29) does not satisfy that requirement. - ramsey/composer-repl 1.5.0 requires ramsey/composer-repl-lib ^1.2 -> satisfiable by ramsey/composer-repl-lib[1.2.0, 1.3.0]. - ramsey/devtools 2.0.0 requires ramsey/composer-repl ^1.5 -> satisfiable by ramsey/composer-repl[1.5.0]. - ramsey/composer-repl-lib 1.3.0 requires symfony/finder ^6.0 || ^7.0 -> satisfiable by symfony/finder[v7.1.0-BETA1, ..., 7.2.x-dev]. - Root composer.json requires ramsey/devtools ^2.0 -> satisfiable by ramsey/devtools[2.0.0].