Update app.py

Inserted this. before agent

app.py

@@ -41,7 +41,7 @@ class BasicAgent:
         print(f"Agent received question (first 50 chars): {question[:50]}...")
         fixed_answer = "This is a default answer."
         # fixed_answer = agent.run(question)
-        print(f"Agent answered How are you today as: {agent.run('How are you today?')}")
+        print(f"Agent answered How are you today as: {this.agent.run('How are you today?')}")
         print(f"Agent returning fixed answer: {fixed_answer}")
         return fixed_answer