Ok, I understand. So, it seems that this event is what's causing the error.
But I don't see the problem with it... The Font Face here also exists correctly as it should.
Maybe you do know what's wrong? I'm so sorry all of this is taking so long... I really didn't think it was going to be this complicated to solve! So again, take your time. It doesn't have to be today, nor tomorrow. I'll be here when you are.