Your requirements could not be resolved to an installable set of packages. Problem 1 - Root composer.json requires composer/pcre ^3.4 -> satisfiable by composer/pcre[3.4.0]. - Root composer.json requires phpstan/phpstan ^1.2 -> satisfiable by phpstan/phpstan[1.2.0, ..., 1.12.34]. - composer/pcre 3.4.0 conflicts with phpstan/phpstan <2.2.2.