Laravel 5 error SQLSTATE[HY000] [1045] Access denied for user 'homestead'@'localhost' (using password: YES)

I have installed Laravel 5 successfully and changed MySQL credentials in database.php file in config directory to '

mysql' => [
            'driver'    => 'mysql',
            'host'      => env('DB_HOST', 'localhost'),
            'database'  => env('DB_DATABASE', 'wdcollect'),
            'username'  => env('DB_USERNAME', 'root'),
            'password'  => env('DB_PASSWORD', ''),
            'charset'   => 'utf8',
            'collation' => 'utf8_unicode_ci',
            'prefix'    => '',
            'strict'    => false,
        ],

APP_ENV=local
APP_DEBUG=true
APP_KEY=apLIzEMOgtc5BUxdT9WRLSvAoIIWO87N

DB_HOST=localhost
DB_DATABASE=wdcollect
DB_USERNAME=root
DB_PASSWORD=

CACHE_DRIVER=file
SESSION_DRIVER=file
QUEUE_DRIVER=sync

MAIL_DRIVER=smtp
MAIL_HOST=mailtrap.io
MAIL_PORT=2525
MAIL_USERNAME=null
MAIL_PASSWORD=null

I don't understand that why it's saying that access denied for 'homestead'@'localhost'

Fix Problem :

php artisan cache:clear
php artisan config:cache

Mysql - Laravel Migration Error:Syntax error or access

Problem Laravel untuk versi 5.*
sering terjadi saat php artisan migrate

untuk mengatasi hal tersebut dengan cara :

Add following code to AppServiceProvider.php (/app/Providers/AppServiceProvider.php)

dan input data seperti dibawah ini :

use Illuminate\Support\Facades\Schema; //NEW: Import Schema

function boot()
{
    Schema::defaultStringLength(191); //NEW: Increase StringLength
}

seperti gambar dibawah ini :

Hapus database di phpmyadmin dan buat kembali database di phpmyadmin.

lakukan upload ulang database dengan php artisan migrate.

pasti berhasil.