diff --git a/src/domain_manager.py b/src/domain_manager.py
index 2d4666a..2e5ca36 100644
--- a/src/domain_manager.py
+++ b/src/domain_manager.py
@@ -174,6 +174,11 @@ class DomainManager:
                                                  req_id, json_part)
                     await connection.execute("select pg_notify('debugresponse', 'SITE END ' || $1);",
                                              req_id)
+                else:
+                    await connection.execute("select pg_notify('debugresponse', 'SITE CHUNK ' || $1 || ' ' || $2);",
+                                                 req_id, json.dumps({"error": "Wiki has not been found in running cache. Please make sure you've given appropriate script URL.", "url": "https://frisk.space/imgs/cat.png"}))
+                    await connection.execute("select pg_notify('debugresponse', 'SITE END ' || $1);",
+                                             req_id)
         else:
             logger.error("Unknown pub/sub command! Payload: {}".format(payload))