# Bug Report | Subject | Details | | :------------- | :---------------------------------------------------------------| | Rector version |v2.2.3 | There is `"nikic/php-parser": "^4.10"` dependency in my project, but rector built-in dependency overrides it. Error throws: `Error: Call to undefined method PhpParser\ParserFactory::create()` ## Minimal PHP Code Causing Issue ```php (new ParserFactory())->create(ParserFactory::PREFER_PHP7) ``` ## Expected Behaviour No errors.