Fatal error: Uncaught RuntimeException: APP_ENV environment variable is not defined. You need to define environment variables for configuration or add "symfony/dotenv" as a Composer dependency to load variables from a .env file. in /home/site2928/capistrano/releases/20180814090538/public/index.php:13 Stack trace: #0 {main} thrown in /home/site2928/capistrano/releases/20180814090538/public/index.php on line 13