Minor changes

backend/src/QA_integration.py

@@ -402,7 +402,8 @@ def get_neo4j_retriever(graph, document_names,chat_mode_settings, score_threshol
 def setup_chat(model, graph, document_names, chat_mode_settings):
     start_time = time.time()
     try:
-        model = "openai-gpt-4o" if model == "diffbot" else model
+        if model == "diffbot":
+            model = os.getenv('DEFAULT_DIFFBOT_CHAT_MODEL')
 
         llm, model_name = get_llm(model=model)
         logging.info(f"Model called in chat: {model} (version: {model_name})")

backend/src/post_processing.py

@@ -93,9 +93,12 @@ def create_fulltext(driver,type):
                     for label in FILTER_LABELS:
                         if label in labels:
                             labels.remove(label)
-
-                    labels_str = ":" + "|".join([f"`{label}`" for label in labels])
-                    logging.info(f"Fetched labels in {time.time() - start_step:.2f} seconds.")
+                    if labels:
+                        labels_str = ":" + "|".join([f"`{label}`" for label in labels])
+                        logging.info(f"Fetched labels in {time.time() - start_step:.2f} seconds.")
+                    else:
+                        logging.info("Full text index is not created as labels are empty")
+                        return
             except Exception as e:
                 logging.error(f"Failed to fetch labels: {e}")
                 return

backend/src/shared/constants.py

@@ -382,7 +382,7 @@
 
      collect {{
          UNWIND nodes AS n
-         MATCH (n)-[:IN_COMMUNITY]->(c:__Community__)
+         OPTIONAL MATCH (n)-[:IN_COMMUNITY]->(c:__Community__)
          WITH c, c.community_rank AS rank, c.weight AS weight
          RETURN c
          ORDER BY rank, weight DESC
@@ -477,7 +477,7 @@
         }
     ] AS chunks,
     [
-        community IN communities | 
+        community IN communities WHERE community IS NOT NULL | 
         community {
             .*,
             embedding: null

frontend/src/components/ChatBot/ChatModeToggle.tsx

@@ -48,7 +48,7 @@ export default function ChatModeToggle({
     return isGdsActive && isCommunityAllowed
       ? AvailableModes
       : AvailableModes?.filter(
-          (m) => !m.mode.includes(chatModeLables.entity_vector) && !m.mode.includes(chatModeLables.global_vector)
+          (m) => !m.mode.includes(chatModeLables.global_vector)
         );
   }, [isGdsActive, isCommunityAllowed]);
   const menuItems = useMemo(() => {