However, I'm still seeing an error in the logs when posting comments. This might be because you’re working from a forked repo (posting comments worked successfully for an unforked PR in #76).

Error posting PR comment: 403 {"message": "Resource not accessible by integration", "documentation_url": "https://docs.github.com/rest/issues/comments#create-an-issue-comment", "status": "403"}

Originally posted by @shenxianpeng in #75 (comment)