Unable to send alerts to Slack (hooks.slack.com)

[sairamsadanala]

Describe the bug
A clear and concise description of what the bug is.

To Reproduce
Expected behavior
Unable to send alerts to Slack (hooks.slack.com)

Screenshots
10-31-2023 15:12:16.534 +0000 ERROR sendmodalert [7101 AlertNotifierWorker-0] - action=slack_webhook_alert STDERR - requests.exceptions.SSLError: [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed: unable to get local issuer certificate (_ssl.c:1106)

Splunk Environment:

• Splunk Version: [9.1.1]
• OS: [RHEL 7]
  Additional context
  We are using slack-webhook-alert 2.0.1 version and when I am changing the slack endpoint from slack proxy endpoint to hooks.slack.com, receiving “slack_webhook_alert STDERR - requests.exceptions.SSLError: [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed: unable to get local issuer certificate (_ssl.c:1106).”. I don’t see any certs configured with in the slack-webhook-alert 2.0.1 app. I downloaded slack_alerts 2.3.0 and observe there is a difference in the attributes of the alert configuration. For an example: in slack-webhook-alertm we have
  action.slack_webhook_alert.param.slack_webhook but in slack_alerts it is action.slack.param.webhook_url.

slack-webhook-alert 2.0.1 app : (DEPRECATED) Slack Webhook Alert | Splunkbase
slack_alerts 2.3.0: Slack Notification Alert | Splunkbase

1. We have thousands of alert jobs using slack-webhook-alert 2.0.1 and need to update to hooks.slack.com. Any suggestions on SSL issue?
2. How can we migrate from slack-webhook-alert 2.0.1 to slack_alerts 2.3.0 ?

I really appreciate your help.

[EatMoreChicken]

Similar error when running from Splunk Cloud as well: --sslclientsession=\x00\x00\x00 died on exception (exit_code=111): Error in 'sendalert' command: Alert script returned error code 3. (This is from using the command)