black screen after loading how I fixed it

[bootheidiot]

so I recently embedded nesbox into my github website I had issues with a black screen after I loaded and couldn't find anything online to fix it so here's what I did for anyone else. in your index.html code look for where it says the system and url now here is what you do all you need to do is change the system to whatever the system is for your rom for example for me I changed system : 'gen', into system : 'nes', I hoped this helped and good luck to everyone