Black subUV issue

Any particle system I put in my scene is black. (see photo) I know it’s an issue with the subUVs and lighting. The one I’m using in the photo is the fire particle system that comes with the starter content, but the sparks particle system is also showing as just black and no color or lighting in the editor.

If I put them into another clean map, they work correctly, so it’s something with the settings I have for the map I’ve made, but I don’t know what it would be. I’m using the volumetrics system, and wondering maybe that is the issue? Anyone else come across this issue?