Error while using "await" keyword with generate_async() function

[Rishab9991]

When trying to reproduce the following snippet as a .py file from the "grounding_rail" sample:

**
from nemoguardrails.rails import LLMRails, RailsConfig
config = RailsConfig.from_path(".")
app = LLMRails(config, verbose=False)
history = [{"role": "user", "content": "What was the last month's unemployment rate?"}]
bot_message = await app.generate_async(messages=history)
print(bot_message['content'])
**

The Error I am getting is this:
"SyntaxError: 'await' outside function"

I have tried to search online but was unable to get a Proper resolution. How do I resolve this Error? Thanks for your support