gitlab_post_receive.rb:47:in `print_broadcast_message': undefined method `scan' for nil

Just got the message on push:

Counting objects: 15, done.
Delta compression using up to 4 threads.
Compressing objects: 100% (15/15), done.
Writing objects: 100% (15/15), 1.95 KiB | 0 bytes/s, done.
Total 15 (delta 12), reused 0 (delta 0)
remote: /opt/gitlab/embedded/service/gitlab-shell/lib/gitlab_post_receive.rb:47:in `print_broadcast_message': undefined method `scan' for nil:NilClass (NoMethodError)
remote: 	from /opt/gitlab/embedded/service/gitlab-shell/lib/gitlab_post_receive.rb:23:in `exec'
remote: 	from hooks/post-receive:17:in `<main>'
remote: 
To git@gitlab.com:...
...

Status changed to closed

Duplicate of #1103 (closed)

mentioned in merge request !14785