Slack integration is not working

[Dinesh Zende]

After providing the Client ID, Client Secret and Slack verification Token in the Google Dialogflow's 'Slack Integration', I am getting 'Internal Slack Server Error'. I tried it a lot many times. But nothing happened much.

[Jose Gutierrez Paliza]

There was an issue in Stack that was solved the 8th of September, the issue was when attempting to connect to slack. You can see this Status page on slack for more details.