I am trying to make a game on quest and it was all going fine until suddenly (I don't remember what I was doing but it didn't seem out of the ordinary from what I'd been doing earlier.) I had an error that said something along the lines of "There is an error with CefSharp.core.dll. No available memory (Exception haddhwh)" Something similar to that, didn't catch it exactly and now I can not play my game to test it. It will show the white screen it shows before starting a game then just crash quest.
Did you make any unusual changes to your game before trying to play it? If so, maybe try undoing it. I think I had that error a couple times after I had done that, and changing it fixed it. What was the change you made before trying your game? This may help, I don't know.