error Protocol

[jakubartur]

(venv) xx@pool ~/Zilliqa-Mining-Proxy # python3 start.py
Traceback (most recent call last):
File "start.py", line 24, in
from zilpool import poolserver
File "/root/Zilliqa-Mining-Proxy/zilpool/poolserver.py", line 28, in
from jsonrpcserver import async_dispatch
File "/root/Zilliqa-Mining-Proxy/venv/lib/python3.7/site-packages/jsonrpcserver/init.py", line 19, in
from .async_main import (
File "/root/Zilliqa-Mining-Proxy/venv/lib/python3.7/site-packages/jsonrpcserver/async_main.py", line 5, in
from .async_dispatcher import dispatch_to_response_pure
File "/root/Zilliqa-Mining-Proxy/venv/lib/python3.7/site-packages/jsonrpcserver/async_dispatcher.py", line 9, in
from oslash.either import Left # type: ignore
File "/root/Zilliqa-Mining-Proxy/venv/lib/python3.7/site-packages/oslash/init.py", line 2, in
from .typing import Functor, Applicative, Monoid, Monad
File "/root/Zilliqa-Mining-Proxy/venv/lib/python3.7/site-packages/oslash/typing/init.py", line 2, in
from .applicative import Applicative
File "/root/Zilliqa-Mining-Proxy/venv/lib/python3.7/site-packages/oslash/typing/applicative.py", line 3, in
from typing import Callable, TypeVar, Protocol
ImportError: cannot import name 'Protocol' from 'typing' (/usr/lib/python3.7/typing.py)
(venv) xx@pool ~/Zilliqa-Mining-Proxy #

me use
python3 --version
Python 3.7.5
any idea why fix ?

[jakubartur]

with this, it works on 3.8 but there is no mining. Can I download the constants.xml file with conf under the proxy? I have the impression that there is something wrong with my conf