Edit file File name : composer.json Content :{ "name": "jms/metadata", "description": "Class/method/property metadata management in PHP", "keywords": ["annotations","metadata","yaml","xml"], "type": "library", "license": "MIT", "authors": [ { "name": "Johannes M. Schmitt", "email": "schmittjoh@gmail.com" }, { "name": "Asmir Mustafic", "email": "goetas@gmail.com" } ], "require": { "php": "^7.2|^8.0" }, "require-dev" : { "doctrine/cache" : "^1.0", "doctrine/coding-standard": "^8.0", "phpunit/phpunit": "^8.5|^9.0", "psr/container": "^1.0", "symfony/cache" : "^3.1|^4.0|^5.0", "symfony/dependency-injection" : "^3.1|^4.0|^5.0", "mikey179/vfsstream": "^1.6.7" }, "autoload": { "psr-4": { "Metadata\\": "src/" } }, "autoload-dev": { "psr-4": { "Metadata\\Tests\\": "tests/" } }, "extra": { "branch-alias": { "dev-master": "2.x-dev" } } } Save