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Git commits in Moodle 3.9.3 by Simon Mok
commit 6de6fe9590fecff5ec478f007fe9150790dd2c03 Author: Simon Mok <simonmok@outlook.com> Date: Mon, 12 Oct 2020 21:43:48 +0800 Tag: v3.9.3 MDL-68070 messaging: Fix error when personal notification is disabled