Image Upload using android and Laravel

I am trying to image upload from android but i am getting error in json. In i am using the following code.

public function expense(Request $request)
{

    $files = $request->file('image');   // file is name of input field
    print_r($files);

    if (isset($files)) {

        echo "True";
        foreach ($files as $file) {
            echo "TEsting";
              $destinationPath = 'uploads/expense';

              $filename = $file->getClientOriginalName();
              $savedFileName = date('Ymdhis')."_".$filename; // give a unique name to file to be saved

              $file->move($destinationPath, $savedFileName);


        }
    } else {
        echo "False";
    }
}

I am getting this error(attaching the screenshot)

via Chebli Mohamed