TypeError: 'type' object is not subscriptable

[Rottah]

og@og-VirtualBox:/LLMChat$ python3.8 main.py
Traceback (most recent call last):
File "main.py", line 5, in
from config import Config
File "/home/og/LLMChat/llmchat/config.py", line 4, in
class Config:
File "/home/og/LLMChat/llmchat/config.py", line 146, in Config
def discord_active_channels(self) -> list[int]:
TypeError: 'type' object is not subscriptable
og@og-VirtualBox:/LLMChat$