Your lock file does not contain a compatible set of packages. Please run composer update. Problem 1 - Root composer.json requires php 7.4.*|7.3.*|7.2.*|7.1.* but your php version (8.3.6) does not satisfy that requirement. Problem 2 - phpstan/phpstan is locked to version 0.12.18 and an update of this package was not requested. - phpstan/phpstan 0.12.18 requires php ^7.1 -> your php version (8.3.6) does not satisfy that requirement. Problem 3 - symfony/var-dumper is locked to version v5.0.7 and an update of this package was not requested. - symfony/var-dumper v5.0.7 requires php ^7.2.5 -> your php version (8.3.6) does not satisfy that requirement. Problem 4 - symfony/yaml is locked to version v5.0.7 and an update of this package was not requested. - symfony/yaml v5.0.7 requires php ^7.2.5 -> your php version (8.3.6) does not satisfy that requirement.