Your requirements could not be resolved to an installable set of packages. Problem 1 - Root composer.json requires slam/phpstan-extensions ^6.0 -> satisfiable by slam/phpstan-extensions[v6.0.0]. - slam/phpstan-extensions v6.0.0 requires php >=8.0 -> your php version (7.4.33) does not satisfy that requirement.

Your requirements could not be resolved to an installable set of packages. Problem 1 - Root composer.json requires contao/contao-rector dev-main -> satisfiable by contao/contao-rector[dev-main]. - contao/contao-rector dev-main requires php ^8.1 -> your php version (7.4.33) does not satisfy that requirement.