Developer credits
Git commits in Moodle 3.9.1 by Leon Stringer
commit 287e8f16e6f819790e97b375f60211e4c256deb4 Author: Leon Stringer <leon.stringer@ntlworld.com> Date: Sun, 05 Jul 2020 22:57:42 +0800 Tag: v3.9.1 MDL-60494 mod_lti: Invalid </img>, example context