Update app.py

app.py

@@ -41,11 +41,7 @@ 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:
-            docs += j
-    provided_docs = docs
+    provided_docs = "".join(st.session_state["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