Update app.py

app.py

@@ -60,7 +60,12 @@ def respond(
 
     # Extract the answer from the response
     answer = response['answer']
-    
+
+     # Ensure that the answer is a string
+    if isinstance(answer, list):
+        answer = ' '.join([str(item) for item in answer])  # Convert list to string
+    elif isinstance(answer, tuple):
+        answer = ' '.join([str(item) for item in answer])  
     # Add conversation to history
     history.append((message, answer))