Update app.py

app.py

@@ -20,6 +20,7 @@ DEFAULT_API_URL = "https://agents-course-unit4-scoring.hf.space"
 # ----- THIS IS WERE YOU CAN BUILD WHAT YOU WANT ------
 class BasicAgent:
     def __init__(self):
+        self.prompt_templates = {}
         self.model = InferenceClientModel()
         self.tools = [
             DuckDuckGoSearchTool(),