Fatal: DB connection failed: SQLSTATE[HY000] [2002] Can't connect to local server through socket '/var/lib/mysql/mysql.sock' (2)

#0 /home/azerisla/azan.net/app/core/Database.php(45): App\Core\Database->connect()
#1 /home/azerisla/azan.net/app/core/Database.php(52): App\Core\Database->query()
#2 /home/azerisla/azan.net/app/models/Country.php(13): App\Core\Database->fetch()
#3 /home/azerisla/azan.net/app/controllers/CityController.php(177): App\Models\Country->findBySlug()
#4 /home/azerisla/azan.net/app/controllers/CityController.php(121): App\Controllers\CityController->resolve()
#5 /home/azerisla/azan.net/app/core/Router.php(123): App\Controllers\CityController->monthly()
#6 /home/azerisla/azan.net/app/core/Router.php(103): App\Core\Router->invoke()
#7 /home/azerisla/azan.net/app/core/App.php(47): App\Core\Router->dispatch()
#8 /home/azerisla/azan.net/index.php(81): App\Core\App->run()
#9 {main}