Summary

At the moment, if a user is not a member of the groups administrators and jira-administrators and try to enable the Slack Integration into JIRA, they get the following error message:

Slack integration add-on error: something went wrong while updating instance
Please, contact support or try again later.

Suggestion

For the users' perspective, it would be great if the error message shows more details about it, something like:

Slack integration add-on error: something went wrong while updating instance
Please, review your account privileges and try again, or contact support.