As you know, there are some plugins made by Yanfly and Victor that has incompatibility issues; some of them are serious, and others only needs little arrangements. This issue is like this last one.
When I use the YEP Victory Aftermath Level Up (Add-on) and Victor's SFonts...
I feel like banging my head against a wall every time I want to find that post that shows all the plugin header codes. Then I think "next time I find it, I'm going to bookmark it". Then I think "wait a minute ... maybe I bookmarked it last time because it took me so long to find it". Check bookmarks, and there it is