Developer credits
Git commits in Moodle 3.10.0 by Simon Mok
commit 1a7928173b3b54fffe98dba3d423ea2459cd9fd2 Author: Simon Mok <simonmok@outlook.com> Date: Mon, 12 Oct 2020 19:30:02 +0800 Tag: v3.10.0-beta MDL-68070 messaging: Fix error when personal notification is disabled