Your requirements could not be resolved to an installable set of packages. Problem 1 - nette/utils v4.0.0 requires php >=8.0 <8.3 -> your php version (8.4.0-dev) does not satisfy that requirement. - nette/utils[v4.0.1, ..., v4.0.4] require php >=8.0 <8.4 -> your php version (8.4.0-dev) does not satisfy that requirement. - nette/utils[v3.2.8, ..., v3.2.9] require php >=7.2 <8.3 -> your php version (8.4.0-dev) does not satisfy that requirement. - nette/utils v3.2.10 requires php >=7.2 <8.4 -> your php version (8.4.0-dev) does not satisfy that requirement. - symplify/phpstan-rules 13.0.0 requires nette/utils ^3.2.9 || ^4.0 -> satisfiable by nette/utils[v3.2.9, v3.2.10, v4.0.0, ..., v4.0.4]. - Root composer.json requires symplify/phpstan-rules ^13.0.0 -> satisfiable by symplify/phpstan-rules[13.0.0].