Update app.py

app.py

@@ -10,6 +10,9 @@ from functools import partial
 cohere_api_key = os.getenv("COHERE_API_KEY")
 co = cohere.Client(cohere_api_key)
 
+history = []
+chat = []
+
 def trigger_example(example):
     chat, updated_history = generate_response(example)
     return chat, updated_history