Update app.py

app.py

@@ -16,7 +16,10 @@ def chatbot(text):
 
 def gradio_interface(prompt, history=[]):
     output = chatbot(prompt)
-    history.append((prompt,output)).reverse()
+    if history != []:
+        history.append((prompt,output)).reverse()
+    else:
+        history.append((prompt, output))
     return history, history
 
 gr.Interface(fn = gradio_interface,