The error you are encountering, TypeError: object WriteResult can't be used in 'await' expression, indicates that the update method you're trying to call on user_ref is returning a WriteResult object that is not awaitable.
To fix this issue, you should check how you're calling the update method. In many cases, especially with Firestore, the update method is asynchronous, but it might not be an awaitable call in your current context. Make sure the appropriate async function is being awaited.
Here’s how you might modify your code to ensure it works correctly:
from your_firestore_library import firestore
async def handle_contact(user_ref, data):
    # Update the user_ref without using await directly
    result = user_ref.update(data)  # This is likely synchronous; check your library documentation
    # Optionally handle the result if you need confirmation of success
    print("Update result:", result)
Make sure to replace your_firestore_library with the actual library you are using to interact with Firestore. If update is part of a library that supports asyncio, ensure you are utilizing that correctly with the await keyword only where needed.
If you provide more context on how user_ref is being defined or how your Firestore setup looks, I can assist further!