500 - Internal Server Error

Error: syntax error, unexpected 'array' (T_ARRAY), expecting function (T_FUNCTION) or const (T_CONST)
File: /home/hepsiequ/public_html/vendor/symfony/event-dispatcher/EventDispatcher.php:35

Stack trace:
#0 /home/hepsiequ/public_html/vendor/composer/ClassLoader.php(427): Composer\Autoload\{closure}('/home/hepsiequ/...')
#1 [internal function]: Composer\Autoload\ClassLoader->loadClass('Symfony\\Compone...')
#2 /home/hepsiequ/public_html/app/Routes.php(112): spl_autoload_call('Symfony\\Compone...')
#3 /home/hepsiequ/public_html/app/Core/init.php(657): include('/home/hepsiequ/...')
#4 /home/hepsiequ/public_html/index.php(3): require_once('/home/hepsiequ/...')
#5 {main}