Hasan Setiawan

Laravel cipher and / or key length are invalid

I am building a project using Laravel. It was working fine on localhost, but when I upload it to the server (the server has comodo ssl installed), I receive the following error:

    
        RuntimeException in EncryptionServiceProvider.php line 29:
        No supported encrypter found. The cipher and / or key length are invalid
        in EncryptionServiceProvider.php line 29
        at EncryptionServiceProvider->Illuminate\Encryption\{closure}(object(Application), array()) in Container.php line 733
        at Container->build(object(Closure), array()) in Container.php line 626
        at Container->make('encrypter', array()) in Application.php line 674
        at Application->make('Illuminate\Contracts\Encryption\Encrypter') in Container.php line 837
        at Container->resolveClass(object(ReflectionParameter)) in Container.php line 800
        at Container->getDependencies(array(object(ReflectionParameter)), array()) in Container.php line 771
        at Container->build('SahraSalon\Http\Middleware\EncryptCookies', array()) in Container.php line 626
        at Container->make('SahraSalon\Http\Middleware\EncryptCookies', array()) in Application.php line 674
        at Application->make('SahraSalon\Http\Middleware\EncryptCookies') in Pipeline.php line 123
        at Pipeline->Illuminate\Pipeline\{closure}(object(Request)) in CheckForMaintenanceMode.php line 42
        at CheckForMaintenanceMode->handle(object(Request), object(Closure))
        at call_user_func_array(array(object(CheckForMaintenanceMode), 'handle'), array(object(Request), object(Closure))) in Pipeline.php line 124
        at Pipeline->Illuminate\Pipeline\{closure}(object(Request))
        at call_user_func(object(Closure), object(Request)) in Pipeline.php line 103
        at Pipeline->then(object(Closure)) in Kernel.php line 118
        at Kernel->sendRequestThroughRouter(object(Request)) in Kernel.php line 86
        at Kernel->handle(object(Request)) in index.php line 54
    

Solution:

      
        //run command
        php artisan key:generate