Your requirements could not be resolved to an installable set of packages. Problem 1 - Root composer.json requires thecodingmachine/phpstan-strict-rules 1.0.*@dev -> satisfiable by thecodingmachine/phpstan-strict-rules[v1.0.0, 1.0.x-dev (alias of dev-master)]. - thecodingmachine/phpstan-strict-rules dev-master requires phpstan/phpstan ^1.0 -> found phpstan/phpstan[1.0.0, ..., 1.12.x-dev] but it conflicts with your root composer.json require (2.1.*@dev). - thecodingmachine/phpstan-strict-rules 1.0.x-dev is an alias of thecodingmachine/phpstan-strict-rules dev-master and thus requires it to be installed too.

Process completed with exit code 2.

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