Getting a GNUTLS error on connecting to slack with slack-start

[larebsyed]

Describe the bug Getting a GNUTLS error on connecting to slack

To Reproduce Steps to reproduce the behavior:

1. slack-register-team
2. slack-start
3. Websocket connection error
4. See error

Backtrace

[2021-06-21 01:32:20] [error] An Error occured while opening websocket connection: (gnutls-error websocket to wss://cerberus-xxxx.lb.slack-msgs.com/websocket/dcw27maI-Sb6tbCXxZcsDI1Y2IwH1P5hGufa5mMtN74DwYvEOtAaF6FMd2Var6k0BBhUx7Nq8GCQ0CJCKIESO6nbALFPpBaPvZCj5mEKpiY= -50) - Arbisoft
[2021-06-21 01:32:20] [trace] REQUEST FINISHED. URL: "https://slack.com/api/rtm.connect", PARAMS: (("mpim_aware" . "1") ("presence_sub" . "true")), DATA: (:ok t :url "wss://cerberus-xxxx.lb.slack-msgs.com/websocket/dcw27maI-Sb6tbCXxZcsDI1Y2IwH1P5hGufa5mMtN74DwYvEOtAaF6FMd2Var6k0BBhUx7Nq8GCQ0CJCKIESO6nbALFPpBaPvZCj5mEKpiY=" :team (:id "T024F6EB4" :name "Arbisoft" :domain "arbisoft") :self (:id "UGZ1N3BT4" :name "lareb.syed")) - Arbisoft

Expected behavior Slack should be connected without error

Environment:

• OS: linux
• Emacs Version: 28.0.50
• emacs-slack Version: 20200830.1021 (melpa version)

[larebsyed]

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