Fatal error: Namespace declaration statement has to be the very first statement or after any declare call in the script in /volume1/02.Web/Alex/web.alex.it.kr/www/app/Security/Auth.php on line 3

Call Stack:
    0.0000     359424   1. {main}() /volume1/02.Web/Alex/web.alex.it.kr/www/index.php:0
    0.0000     359728   2. require_once('/volume1/02.Web/Alex/web.alex.it.kr/www/_inc/config.php') /volume1/02.Web/Alex/web.alex.it.kr/www/index.php:2
    0.0006     363840   3. require_once('/volume1/02.Web/Alex/web.alex.it.kr/www/_inc/bootstrap.php') /volume1/02.Web/Alex/web.alex.it.kr/www/_inc/config.php:13
    0.0008     364160   4. class_alias($class = 'App\\Security\\Auth', $alias = 'Auth') /volume1/02.Web/Alex/web.alex.it.kr/www/_inc/bootstrap.php:8
    0.0008     364272   5. Composer\Autoload\ClassLoader->loadClass($class = 'App\\Security\\Auth') /volume1/02.Web/Alex/web.alex.it.kr/www/_inc/bootstrap.php:8
    0.0008     364384   6. Composer\Autoload\{closure:/volume1/02.Web/Alex/web.alex.it.kr/www/vendor/composer/ClassLoader.php:575-577}($file = '/volume1/02.Web/Alex/web.alex.it.kr/www/vendor/composer/../../app/Security/Auth.php') /volume1/02.Web/Alex/web.alex.it.kr/www/vendor/composer/ClassLoader.php:427