HTTP error 500 : Uncaught ReflectionException: Class config does not exist in  #431

LOOK #431 (comment) for the real bug about LDAP

• BookStack Version: latest (used git clone https://github.com/BookStackApp/BookStack.git --branch release --single-branch today)
• PHP Version: 7.0.19-1
• MySQL Version: 10.1.23-MariaDB-9+deb9u1 Debian 9.0

Expected Behavior

Website working

Actual Behavior

Website not working : HTTP ERROR 500.

In the logs, I have:

[Mon Jul 10 16:08:34.382725 2017] [:error] [pid 3649] [client 10.10.9.180:57699] PHP Fatal error: Uncaught ReflectionException: Class config does not exist in /var/www/BookStack/vendor/laravel/framework/src/Illuminate/Container/Container.php:681\nStack trace:\n#0 /var/www/BookStack/vendor/laravel/framework/src/Illuminate/Container/Container.php(681): ReflectionClass->__construct('config')\n#1 /var/www/BookStack/vendor/laravel/framework/src/Illuminate/Container/Container.php(565): Illuminate\Container\Container->build('config')\n#2 /var/www/BookStack/vendor/laravel/framework/src/Illuminate/Foundation/Application.php(702): Illuminate\Container\Container->make('config')\n#3 /var/www/BookStack/vendor/laravel/framework/src/Illuminate/Foundation/helpers.php(105): Illuminate\Foundation\Application->make('config')\n#4 /var/www/BookStack/vendor/laravel/framework/src/Illuminate/Foundation/helpers.php(263): app('config')\n#5 /var/www/BookStack/vendor/laravel/framework/src/Illuminate/Foundation/Exceptions/Handler.php(211): config('app.debug')\n#6 /var/www/BookStack/vendor/laravel/framework/src/Illuminate/Foundation/Exception in /var/www/BookStack/vendor/laravel/framework/src/Illuminate/Container/Container.php on line 681