Substrate 'register_extension' not working

[tutacrypto]

Hello,

I am trying to connect to a Bittensor Finney node and want to use a Substrate Interface extension to use the 'filter_extrinsics' function.

I have tried both with SubstrateNodeExtension and PolkascanExtension, but I get a 'SubstrateInterface' object has no attribute 'register_extension' error.

Here is an example of my python code:

from substrateinterface import SubstrateInterface 
from substrateinterface_polkascan.extensions import PolkascanExtension
substrate = SubstrateInterface(url="wss://entrypoint-finney.opentensor.ai:443/")
substrate.register_extension(PolkascanExtension(url="wss://entrypoint-finney.opentensor.ai:443/"))

I'm running substrate-interface==1.7.5.

Any help appreciated!

[tutacrypto]

I changed my substrate-interface package version to 1.7.0 and it worked!
I now have a problem calling the filter_events function.

events = substrate.extensions.filter_events(pallet_name="Balances", event_name="Transfer", page_size=10)
print(events)

Here is the error I get:
AssertionError: Cannot run client.execute(query) if an asyncio loop is running. Use 'await client.execute_async(query)' instead.

I asked ChatGPT but it couldn't save me this time.