This is coming in 1.9.0 https://github.com/NodeBB/NodeBB/issues/6433
What does this mean when I try to add a JS file?
Some JS files have built-in AMD support, ie. support for requirejs. If it detects requirejs the script will attempt to
define()itself (as opposed to attach itself to
So in other words, don't add this script to your header, you should use requirejs to load it, like this