How to solve oauth2: cannot fetch token issue when configuring Jira Mattermost plugin

Question

I am currently facing an error that prevents me from finishing my Mattermost Jira plugin configuration. I am following all the steps recommended by `/jira setup` and everything works fine but when I run the `/jira connect` command I am receiving the following error:

could not get user info for client, err: No response returned: Get "https://server.atlassian.net/rest/api/2/myself": oauth2: cannot fetch token: 400 Bad Request
Response: {"error":"invalid_grant","error_description":"Invalid aud: https://auth.atlassian.io"}

I am using a Gitlab Mattermost self-hosted installation. I currently authenticate to Mattermost using Gitlab.

Larry Morroni · Answer

We ran into this and struggled for a bit. Final solution was:

- Update to latest Jira plugin inside Mattermost
- Make sure Jira instance is uninstalled in Mattermost `/jira instance uninstall <INSTANCE>`
One note that we could not easily remove our Jira instance from Mattermost so we had to manually nuke all the Jira plugin settings by running a database command.
```
DELETE FROM pluginkeyvaluestore WHERE pluginid='jira';
```

- Delete Mattermost plugin on Jira side if it exists
- From Mattermost re-run the setup and go through process of regenerating a new token and installing the Mattermost plugin within Jira `/jira setup`

Hope this helps somebody.
Larry

Jonathan Suarez · Answer

Was there a resolution to this issue?

demsi · Answer

We are experiencing exactly the same. Slight difference: We are not logging in other than with username/password.

The browser that is opening already has an active session. The opposite was tested as well.

this is what it looks like:

But: Be aware there is an open issue regarding this on matermost's github:

https://github.com/mattermost/mattermost-plugin-jira/issues/945

I recommend joining the mattermost community for there is a plugin: jira channel with all the latest updates on this issue.

https://community.mattermost.com/login?redirect_to=%2Fcore%2Fchannels%2Fjira-plugin

Hth