Your lock file does not contain a compatible set of packages. Please run composer update. Problem 1 - nucleos/dev-tools is present at version dev-c527cff720d6e3701b8ed18c20a4ce6307decb86 and cannot be modified by Composer - nucleos/dev-tools dev-c527cff720d6e3701b8ed18c20a4ce6307decb86 conflicts with symfony/config v7.0.0. - symfony/config is locked to version v7.0.0 and an update of this package was not requested.