Error when running Debank exporter

[imimim-username]

When running debank_exporter.py, I get the following error:
Traceback (most recent call last):
File "...\debank_exporter.py", line 20, in
from utils import fetch_url
File "..\utils.py", line 17
async def fetch_url(url str) - str
^^^
SyntaxError: invalid syntax

Thanks