Developer credits
Git commits in Moodle 3.9.7 by Juan Leyva
commit 39916b12fd357fb2c92716b0046c71bd828359ce Author: Juan Leyva <juanleyvadelgado@gmail.com> Date: Wed, 31 Mar 2021 23:49:58 +0800 Tag: v3.9.7 MDL-70863 mod_forum: Allow NULL in timecreated