Update app.py

app.py

@@ -68,7 +68,7 @@ def initialize_knowledge_base():
     if contents_to_add:
         try:
             # Using add_contents which is recommended for batch processing
-            knowledge.add_contents(contents_to_add)
+            knowledge.add_content(contents_to_add)
             logger.info(f"✅ Successfully added {len(contents_to_add)} PDFs to the knowledge base.")
         except Exception as e:
             logger.error(f"Failed to add PDFs to knowledge base: {e}")