TypeError: 'type' object is not subscriptable

[gkyh]

Run:
from solathon import Client, PublicKey

client = Client("https://api.devnet.solana.com")
public_key = PublicKey("B3BhJ1nvPvEhx3hq3nfK8hx4WYcKZdbhavSobZEA44ai")

balance = client.get_balance(public_key)
print(balance)

from solathon import Client, PublicKey
File "/Users/mac/opt/miniconda3/envs/py/lib/python3.8/site-packages/solathon/init.py", line 3, in
from .client import Client
File "/Users/mac/opt/miniconda3/envs/py/lib/python3.8/site-packages/solathon/client.py", line 5, in
from .utils import RPCRequestError, validate_commitment
File "/Users/mac/opt/miniconda3/envs/py/lib/python3.8/site-packages/solathon/utils.py", line 6, in
from solathon.core.types import Commitment, RPCErrorType, RPCResponse
File "/Users/mac/opt/miniconda3/envs/py/lib/python3.8/site-packages/solathon/core/types/init.py", line 1, in
from .account_info import AccountInfo, AccountInfoType, ProgramAccount, ProgramAccountType
File "/Users/mac/opt/miniconda3/envs/py/lib/python3.8/site-packages/solathon/core/types/account_info.py", line 3, in
class AccountInfoType(TypedDict):
File "/Users/mac/opt/miniconda3/envs/py/lib/python3.8/site-packages/solathon/core/types/account_info.py", line 12, in AccountInfoType
data: Union[str, dict[str, Any]]
TypeError: 'type' object is not subscriptable

What's happened????

[GitBolt]

@gkyh What Python version are you using?

[gkyh]

python3.8,
yet，Virtual memory is too small