Update app.py

app.py

@@ -28,7 +28,9 @@ prompt.pretty_print()
 agent = create_tool_calling_agent(llm=llm, tools=tools, prompt=prompt)
 agent_executor =  AgentExecutor(agent=agent, tools=tools, verbose=False)
 
-def generate(query, api_key=""):
+def generate(query):
+  if query.strip() == "":
+    return "Enter your question"
   output = agent_executor.invoke({"input": query})["output"]
   return output