Edit file File name : composer.json Content :{ "name": "guzzle/parser", "homepage": "http://guzzlephp.org/", "description": "Interchangeable parsers used by Guzzle", "keywords": ["HTTP", "message", "cookie", "URL", "URI Template"], "license": "MIT", "require": { "php": ">=5.3.2" }, "autoload": { "psr-0": { "Guzzle\\Parser": "" } }, "target-dir": "Guzzle/Parser", "extra": { "branch-alias": { "dev-master": "3.7-dev" } } } Save