Click on button errors

[Philmod]

Summary

When I click on any button (Mark as complete, delete, etc...), the http call fails with: {"id":"api.post.do_action.action_integration.app_error","message":"Action integration error","detailed_error":"","request_id":"j9w5n5qozjntfnj58gkcbesrah","status_code":400}

Steps to reproduce

Steps to reproduce the behavior:

1. Go to '...'
2. Click on '....'
3. Scroll down to '....'
4. See error

Expected behavior

Perform the action and returns some feedback.

Observed behavior (that appears unintentional)

Nothing. I had to go to the browser console to see there was an error.

Server configuration

Operating system:
Linux

Mattermost version:
5.14.0

Remind version:
0.4.4

Updated from an older Remind bot version or fresh install:
Fresh install

Mattermost server logs

{"level":"error","ts":1610741146.9604926,"caller":"mlog/log.go:173","msg":"Action integration error","path":"/api/v4/posts/3copiqynebry5jooodbpwtopbh/actions/mrxtdjygdpgzjbjqkh8qf9ppcc","request_id":"9nnxf3q3bpbf9mg4wn96obybne","ip_addr":"68.199.47.235","user_id":"9oyrfauyc3fo8nt111t883sbie","method":"POST","err_where":"DoActionRequest","http_code":400,"err_details":"status=401"}

Additional context

Our mattermost installation is protected behind Google Cloud IAP, but I'm guessing these calls should call "localhost".

[hanzei]

The mattermost version you are using is quite old. Could you please update to a newer one and test again?

[Philmod]

Upgrading to 5.31 fixed the problem, thanks.