Only add the delete url if there is a user id is present

Fixes #623
Signed-off-by: Micheal Mand <micheal@kmdwebdesigns.com>

Modules/User/Transformers/FullRoleTransformer.php

@@ -19,10 +19,13 @@ class FullRoleTransformer extends Resource
             'created_at' => $this->created_at,
             'permissions' => $permissions,
             'users' => UserTransformer::collection($this->whenLoaded('users')),
-            'urls' => [
-                'delete_url' => route('api.user.role.destroy', $this->id),
-            ],
+            'urls' => [],
         ];
+        if ($this->id) {
+            $data['urls'] = [
+                'delete_url' => route('api.user.role.destroy', $this->id),
+            ];
+        }
 
         return $data;
     }