QueryException SQLSTATE[HY000] [2002] Connection refused

Question

I am not able to connect to database using Laravel.

PHP version: 7.1.10 MAC OSX

Error:

Whoops, looks like something went wrong.
(2/2) QueryException
SQLSTATE[HY000] [2002] Connection refused (SQL: SELECT * FROM project_categories WHERE status='A')

in Connection.php (line 647)
at Connection->runQueryCallback(object(Expression), array(), object(Closure))
in Connection.php (line 607)
at Connection->run(object(Expression), array(), object(Closure))
in Connection.php (line 326)
at Connection->select(object(Expression))
in DatabaseManager.php (line 324)`

ENV SETTINGS

APP_NAME=Somesite
APP_ENV=local
APP_KEY=base64:hFfau6WVxgBJ7GCmvnOK+GZd9/MuIy03zAqNCO8VTO8=
APP_DEBUG=true
APP_LOG_LEVEL=debug
APP_URL=http://localhost

DB_CONNECTION=mysql
DB_HOST=127.0.0.1
DB_PORT=3306
DB_DATABASE=somesite
DB_USERNAME=root
DB_PASSWORD=

Database.php configurations:

        mysql' => [
            'driver' => 'mysql',
            'host' => env('DB_HOST', '127.0.0.1'),
            'port' => env('DB_PORT', '3306'),
            'database' => env('DB_DATABASE', 'mahijaa'),
            'username' => env('DB_USERNAME', 'root'),
            'password' => env('DB_PASSWORD', ''),
            'unix_socket' => env('DB_SOCKET', ''),
            'charset' => 'utf8mb4',
            'collation' => 'utf8mb4_unicode_ci',
            'prefix' => '',
            'strict' => true,
            'engine' => null,
        ],

Followed this thread: https://github.com/laravel/framework/issues/19522 to find solution but no use. What am i doing wrong, is it the problem with my code or environment. The same code works absolutely fine in windows machine. Recently migrated to mac OS and all went on toss