how to fix error Import "chess" could not be resolved

Question

please help me fix error Import "chess" could not be resolved and many more errors like: Import "chess .pgn" could not be resolved, Import "chess.variant" could not be resolved,Import "chess.polyglot" could not be resolved,Import "backoff" could not be resolved,Import "load_config" could not be resolved, Import "requests.exceptions" could not be resolved from source, Import "urllib3.exceptions" could not be resolved from source. I am trying to run lichess-bot program then get this error. And here is the code:

import argparse
import chess
import chess.pgn
from chess.variant import find_variant
import chess.polyglot
import engine_wrapper
import model
import json
import lichess
import logging
import logging.handlers
import multiprocessing
import logging_pool
import signal
import time
import backoff
import sys
import random
import os
import io
import load_config
from conversation import Conversation, ChatLine
from requests.exceptions import ChunkedEncodingError, ConnectionError, HTTPError, ReadTimeout
from urllib3.exceptions import ProtocolError
from ColorLogger import enable_color_logging
from collections import defaultdict
from http.client import RemoteDisconnected