Edit file File name : composer.json Content :{ "name": "psr/log", "description": "Common interface for logging libraries", "keywords": ["psr", "psr-3", "log"], "homepage": "https://github.com/php-fig/log", "license": "MIT", "authors": [ { "name": "PHP-FIG", "homepage": "https://www.php-fig.org/" } ], "require": { "php": ">=5.3.0" }, "autoload": { "psr-4": { "Psr\\Log\\": "Psr/Log/" } }, "extra": { "branch-alias": { "dev-master": "1.1.x-dev" } } } Save