Update app.py

app.py

@@ -70,7 +70,7 @@ if prompt := st.chat_input("What is up?"):
 # Streamed response emulator
 def response_generator():
     query = f"{prompt}"
-    if query != None:
+    if query != "None":
         for m in chain.stream(query):
             print(m)
             yield m + " "