Developer credits
Git commits in Moodle 3.7.3 by Michael Hawkins
commit 87c1819e2f9504789885f16ed4d13ccee97ec3a6 Author: Michael Hawkins <michaelh@moodle.com> Date: Tue, 29 Oct 2019 16:29:46 +0800 Tag: v3.7.3 MDL-66161 output: Escaping fatal error message and URL strings