Filesystem Problems

Hello

I have a problem, im trying to upload a file to amazon s3 and im having a problem with the filesystem. i have set up the settings in the config with my information. and ive pulled in the composer package.

Here is a sample of my code

    public function uploadfile(Request $request,  $category)
    {
        $file = Input::file('file');
        $originalname = Input::file('file')->getClientOriginalName();
        $newname = str_random(32);
        $password = str_random(20);
        $newpath = storage_path("temp/");
        $extension = Input::file('file')->getClientOriginalExtension();
        $move = Input::file('file')->move($newpath, $originalname);
        shell_exec('7z a -p' . $password . ' -r ' . $newpath . $newname . '.7z ' . $newpath . $originalname);
        Storage::disk('s3')->put('/downloads/' . $category . '/' . $newname . ".7z", file_get_contents($newpath . $newname . '.7z'));
    }

Here is the error message im getting http://cl.ly/image/3q060P2J2Q0M

Here is a copy of my composer.json

{
    "name": "laravel/laravel",
    "description": "The Laravel Framework.",
    "keywords": ["framework", "laravel"],
    "license": "MIT",
    "type": "project",
    "require": {
        "php": ">=5.5.9",
        "laravel/framework": "5.1.*",
        "graham-campbell/markdown": "~3.0",
        "illuminate/html": "5.*",
        "aws/aws-sdk-php": "^3.0@dev"
    },
    "require-dev": {
        "fzaninotto/faker": "~1.4",
        "mockery/mockery": "0.9.*",
        "phpunit/phpunit": "~4.0",
        "phpspec/phpspec": "~2.1"
    },
    "autoload": {
        "classmap": [
            "database"
        ],
        "psr-4": {
            "App\\": "app/"
        }
    },
    "autoload-dev": {
        "classmap": [
            "tests/TestCase.php"
        ]
    },
    "scripts": {
        "post-install-cmd": [
            "php artisan clear-compiled",
            "php artisan optimize"
        ],
        "post-update-cmd": [
            "php artisan clear-compiled",
            "php artisan optimize"
        ],
        "post-root-package-install": [
            "php -r \"copy('.env.example', '.env');\""
        ],
        "post-create-project-cmd": [
            "php artisan key:generate"
        ]
    },
    "config": {
        "preferred-install": "dist"
    },
    "minimum-stability": "dev",
    "prefer-stable": true
}