keep the chat history strip list comprehension

app.py

@@ -124,15 +124,17 @@ def predict(
     chat = [(history[i].strip(), history[i + 1].strip()) for i in range(0, len(history) - 1, 2)]
     yield chat, history, None, None, None, []
 
+  chat = [(history[i].strip(), history[i + 1].strip()) for i in range(0, len(history) - 1, 2)]
+  
   # Pinecone context retrieval
   top_context_list = ta.retrieve_contexts_from_pinecone(user_question=inputs, topk=NUM_ANSWERS_GENERATED)
   # yield chat, history, top_context_list[0], top_context_list[1], top_context_list[2], []
-  yield None, None, top_context_list[0], top_context_list[1], top_context_list[2], []
+  yield chat, history, top_context_list[0], top_context_list[1], top_context_list[2], []
 
   # run CLIP
   images_list = ta.clip_text_to_image(inputs)
   # yield chat, history, top_context_list[0], top_context_list[1], top_context_list[2], images_list
-  yield None, None, top_context_list[0], top_context_list[1], top_context_list[2], images_list
+  yield chat, history, top_context_list[0], top_context_list[1], top_context_list[2], images_list
 
 
 def reset_textbox():