Im getting this error randomly,i search it and it seems that this happens if you havent set an app key,the problem is i had set it from the start.The problem usually happens when i make multiple cals.

error:

[2015-10-12 16:36:11] development.ERROR: exception 'RuntimeException' with message 'No supported encrypter found. The cipher and / or key length are invalid.' in C:\xampp2\laravel\vendor\laravel\framework\src\Illuminate\Encryption\EncryptionServiceProvider.php:29 Stack trace: #0 C:\xampp2\laravel\vendor\laravel\framework\src\Illuminate\Container\Container.php(733): Illuminate\Encryption\EncryptionServiceProvider->Illuminate\Encryption{closure}(Object(Illuminate\Foundation\Application), Array) #1 C:\xampp2\laravel\vendor\laravel\framework\src\Illuminate\Container\Container.php(626): Illuminate\Container\Container->build(Object(Closure), Array) #2 C:\xampp2\laravel\vendor\laravel\framework\src\Illuminate\Foundation\Application.php(674): Illuminate\Container\Container->make('encrypter', Array) #3 C:\xampp2\laravel\vendor\laravel\framework\src\Illuminate\Container\Container.php(837): Illuminate\Foundation\Application->make('Illuminate\Cont...') #4 C:\xampp2\laravel\vendor\laravel\framework\src\Illuminate\Container\Container.php(800): Illuminate\Container\Container->resolveClass(Object(ReflectionParameter)) #5 C:\xampp2\laravel\vendor\laravel\framework\src\Illuminate\Container\Container.php(771): Illuminate\Container\Container->getDependencies(Array, Array) #6 C:\xampp2\laravel\vendor\laravel\framework\src\Illuminate\Container\Container.php(626): Illuminate\Container\Container->build('App\Http\Middle...', Array) #7 C:\xampp2\laravel\vendor\laravel\framework\src\Illuminate\Foundation\Application.php(674): Illuminate\Container\Container->make('App\Http\Middle...', Array) #8 C:\xampp2\laravel\vendor\laravel\framework\src\Illuminate\Foundation\Http\Kernel.php(142): Illuminate\Foundation\Application->make('App\Http\Middle...') #9 C:\xampp2\htdocs\public\index.php(58): Illuminate\Foundation\Http\Kernel->terminate(Object(Illuminate\Http\Request), Object(Illuminate\Http\Response)) #10 {main}