Update app.py

app.py

@@ -42,9 +42,11 @@ def conversational_chat(query):
     for i in st.session_state['history']:
         if i is not None:
             previous_response += f"Human: {i[0]}\n Chatbot: {i[1]}"
+    docs = ""
     for j in st.session_state["docs"]:
         if j is not None:
-            provided_docs += j
+            docs += j
+    provided_docs = docs
     result = llm_chain.predict(chat_history=previous_response, human_input=query, provided_docs=provided_docs)
     st.session_state['history'].append((query, result))
     return result