default on string value if json decode fails

src/Utils/LuRoute.php

@@ -70,6 +70,9 @@ class LuRoute {
             try
             {
                 $json = json_decode($value, true);
+                if (is_null($json)) {
+                    $json = $value . "";
+                }
                 $typedValue = call_user_func_array(array($class->getName(), "jsonDeserialize"), array($json));
             }
             catch (LuDboDeserializeException $e)