try catch dbo deserialize

src/Utils/LuRoute.php

         }
         else {
             $class = $param->getClass();
-            $json = json_decode($value, true);
-            $typedValue = call_user_func_array(array($class->getName(), "jsonDeserialize"), array($json));
+            try
+            {
+                $json = json_decode($value, true);
+                $typedValue = call_user_func_array(array($class->getName(), "jsonDeserialize"), array($json));
+            }
+            catch (\Exception $e)
+            {
+                LuLog::log($e);
+                LuBusiness::badInput("Unable to parse JSON value for " . $param->getName());
+            }
         }
         return $typedValue;
     }