Issue with running python-slack-sdk using test application.

[anthonythambiah]

Hi all, I am attempting to send a test message to one of my slack messages using the above SDK. Here is my code for reference. Note I've added "xxxxxx" to my channel. This is a live channel that I am using in my environment.

import os
import logging
import sys
logging.basicConfig(level=logging.DEBUG)
from slack_sdk import WebClient
from slack_sdk.errors import SlackApiError

client = WebClient(token=os.environ['SLACK_BOT_TOKEN'])
api_response = client.api_test()

try:
    response = client.chat_postMessage(channel='xxxxxxxx', text="Hello world!")
    assert response["message"]["text"] == "Hello world!"
except SlackApiError as e:
    # You will get a SlackApiError if "ok" is False
    assert e.response["ok"] is False
    assert e.response["error"]  # str like 'invalid_auth', 'channel_not_found'
    print(f"Got an error: {e.response['error']}")

This is the following result:
Got an error: channel_not_found
or
Got an error: invalid_auth

The permissions that I am using are:
channels:manage,groups:write,im:write,mpim:write,chat:write.public,chat:write

I tried to enable the log for this as well.

DEBUG:slack_sdk.web.base_client:Sending a request - url: https://www.slack.com/api/api.test, query_params: {}, body_params: {}, files: {}, json_body: None, headers: {'Content-Type': 'application/x-www-form-urlencoded', 'Authorization': '(redacted)', 'User-Agent': 'Python/3.7.9 slackclient/3.19.5 Darwin/21.6.0'} DEBUG:slack_sdk.web.base_client:Received the following response - status: 200, headers: {'date': 'Thu, 29 Dec 2022 20:27:29 GMT', 'server': 'Apache', 'x-powered-by': 'HHVM/4.153.1', 'access-control-allow-origin': '*', 'referrer-policy': 'no-referrer', 'x-slack-backend': 'r', 'x-slack-unique-id': 'xxxxxxxxxxxxxxxxxxxxx', 'strict-transport-security': 'max-age=31536000; includeSubDomains; preload', 'access-control-allow-headers': 'slack-route, x-slack-version-ts, x-b3-traceid, x-b3-spanid, x-b3-parentspanid, x-b3-sampled, x-b3-flags', 'access-control-expose-headers': 'x-slack-req-id, retry-after', 'x-oauth-scopes': 'channels:manage,groups:write,im:write,mpim:write,chat:write.public,chat:write', 'expires': 'Mon, 26 Jul 1997 05:00:00 GMT', 'cache-control': 'private, no-cache, no-store, must-revalidate', 'pragma': 'no-cache', 'x-xss-protection': '0', 'x-content-type-options': 'nosniff', 'x-slack-req-id': 'xxxxxxxxxxxxxxxxxxxxx', 'vary': 'Accept-Encoding', 'content-type': 'application/json; charset=utf-8', 'x-envoy-upstream-service-time': '22', 'x-backend': 'main_normal main_bedrock_normal_with_overflow main_canary_with_overflow main_bedrock_canary_with_overflow main_control_with_overflow main_bedrock_control_with_overflow', 'x-server': 'slack-www-hhvm-main-iad-smef', 'x-slack-shared-secret-outcome': 'no-match', 'via': 'envoy-www-iad-vayg, envoy-edge-iad-yovk', 'x-edge-backend': 'envoy-www', 'x-slack-edge-shared-secret-outcome': 'no-match', 'connection': 'close', 'transfer-encoding': 'chunked'}, body: {"ok":true,"args":{"token":"xxxxxxxxxxxxxxxxxxxxx"}} DEBUG:slack_sdk.web.base_client:Sending a request - url: https://www.slack.com/api/chat.postMessage, query_params: {}, body_params: {}, files: {}, json_body: {'channel': 'xxxxxxxxx', 'text': 'Hello world!'}, headers: {'Content-Type': 'application/json;charset=utf-8', 'Authorization': '(redacted)', 'User-Agent': 'Python/3.7.9 slackclient/3.19.5 Darwin/21.6.0'} DEBUG:slack_sdk.web.base_client:Received the following response - status: 200, headers: {'date': 'Thu, 29 Dec 2022 20:27:29 GMT', 'server': 'Apache', 'x-powered-by': 'HHVM/4.153.1', 'access-control-allow-origin': '*', 'referrer-policy': 'no-referrer', 'x-slack-backend': 'r', 'x-slack-unique-id': 'xxxxxxxxxxx', 'strict-transport-security': 'max-age=31536000; includeSubDomains; preload', 'access-control-allow-headers': 'slack-route, x-slack-version-ts, x-b3-traceid, x-b3-spanid, x-b3-parentspanid, x-b3-sampled, x-b3-flags', 'access-control-expose-headers': 'x-slack-req-id, retry-after', 'x-oauth-scopes': 'channels:manage,groups:write,im:write,mpim:write,chat:write.public,chat:write', 'x-accepted-oauth-scopes': 'chat:write', 'expires': 'Mon, 26 Jul 1997 05:00:00 GMT', 'cache-control': 'private, no-cache, no-store, must-revalidate', 'pragma': 'no-cache', 'x-xss-protection': '0', 'x-content-type-options': 'nosniff', 'x-slack-req-id': 'xxxxxxxxxxxxxxxxxx', 'vary': 'Accept-Encoding', 'content-type': 'application/json; charset=utf-8', 'x-envoy-upstream-service-time': '28', 'x-backend': 'main_normal main_bedrock_normal_with_overflow main_canary_with_overflow main_bedrock_canary_with_overflow main_control_with_overflow main_bedrock_control_with_overflow', 'x-server': 'slack-www-hhvm-main-iad-xdxl', 'x-slack-shared-secret-outcome': 'no-match', 'via': 'envoy-www-iad-6eo8, envoy-edge-iad-tnva', 'x-edge-backend': 'envoy-www', 'x-slack-edge-shared-secret-outcome': 'no-match', 'connection': 'close', 'transfer-encoding': 'chunked'}, body: {"ok":false,"error":"channel_not_found"} Got an error: channel_not_found

The channel itself exists as I am using it. However, I would like to know if there is anything else that I am missing which is causing this error?

[seratch]

Hi @anthonythambiah,

Got an error: channel_not_found

This indicates 1) the channel ID is not correct (you might set a channel ID in a different workspace) 2) the channel is private and your app's bot user is not a member of the channel. Perhaps, the cause would be 2). In this case, you need to invite your app's bot user to the channel.

Got an error: invalid_auth

When you get this error, the SLACK_BOT_TOKEN should be invalid. This is not due to permission issues. The string value you passed is not correct.

[anthonythambiah]

@seratch This worked, I was unaware that the bot needed to be added into the channel. Thanks for your help.