pymongo.errors.ServerSelectionTimeoutError

Почему у меня пишет pymongo.errors.ServerSelectionTimeoutError [SSL: CERTIFICATE_VERIFY_FAILED]

@client.event
async def on_ready():
    print('connected')

    for guild in client.guilds:
        for member in guild.members:
            post = {
                "_id": member.id,
                "lvl": 0,
                "xp": 0,
                "nextlvl": 100
            }

            if collection.count_documents({"_id": member.id}) == 0:
                collection.insert_one(post)
    



@client.event
async def on_member_join(member):
    post = {
        "_id": member.id,
        "lvl": 0,
        "xp": 0,
        "nextlvl": 100
    }

    if collection.count_documents({"_id": member.id}) == 0:
        collection.insert_one(post)