Fix No source message

.gitattributes

@@ -35,3 +35,4 @@ saved_model/**/* filter=lfs diff=lfs merge=lfs -text
 *tfevents* filter=lfs diff=lfs merge=lfs -text
 faiss_index/index.faiss filter=lfs diff=lfs merge=lfs -text
 parsed_texts.csv filter=lfs diff=lfs merge=lfs -text
+faiss_index/index.pkl filter=lfs diff=lfs merge=lfs -text

app.py

@@ -172,10 +172,11 @@ def generate_response(prompt):
         if src.page_content.startswith('Paragraph:'):
             sources.append(src.metadata['source'])
     
-    if sources:
-        message = message + "\n\nNo sources"
+    if len(sources)==0:
+        message = message + "\n\n[No sources]"
     else:
         message = message + "\n\n[" + ", ".join(sources) + "]"
+        
     return message