Update app.py

app.py

@@ -52,7 +52,7 @@ custom_role_conversions=None,
 # @tool
 # image_generation_tool = load_tool("agents-course/text-to-image", trust_remote_code=True)
 @tool
-def generate_image_from_text(prompt: str):
+def generate_image_from_text(prompt: str)-> None:
     """Generates and displays an image based on the given text prompt.
     
     Args: