Sometimes after arc land, the revision not autoclosed

We use git, most times it works well, but sometimes after arc land the branch, the revision do not autoclose.

The question is that I don’t know how to figure out what is wrong.

I tried to see all the logs, but found nothing.

Can anyone give some suggest?

That happened to me also, in my case there was an herald that was failing and causing the whole process of closing the revision to fail.

I debbuged the daemon with:
bin/phd debug task

And I looked into /var/tmp/phd/log/daemons.log to have more information. Also you can see the list of jammed tasks at https://yourphabricator/daemon/

Disabling the herald wasn’t enough, I had to cancel all retrying tasks.