I have an issue while using slack sdk to retrieve messages from Slack using chat bot.

I am using this simple python code:

import time
from slack_sdk import WebClient
from slack_sdk.errors import SlackApiError

client = WebClient(token="xoxb-XXXXX")


def fetch_channel_history(channel_id, latest=None, oldest=None):
    try:
        result = client.conversations_history(
            channel=channel_id,
            latest=latest,
            oldest=oldest
        )

        # Check if the request was successful
        if result["ok"]:
            messages = result['messages']
            for message in messages:
                print(f"User {message['user'] if 'user' in message else 'Unknown'} said: {message['text']}")
        else:
            print("Failed to fetch messages")

    except SlackApiError as e:
        print(f"Error fetching conversations: {e.response['error']}")


current = time.time()
five_day_ago = current - 5 * 24 * 60 * 60  # 5 day
fetch_channel_history('channel-id', current, five_day_ago)

However, if i run it 10 times, it might be that only 1 time i get messages…. So, it is not reliable. If i remove the usage of lasted and oldest from the query, it always returns messages, in every run.

And yes, i have messages from every day chat, so 5 days are enough to get the data.

Any idea how to solve it?