Adobe animate - Getting an white screen, but can't fix it

my animation is ready, only when i want to test it i get a white screen, i dont know where the error is... as soon as i turn the camera layer off (i think it has something to do with this), i only see the first frame but not the whole animation. as soon as i test it in animate itself (without publish it to the browser_everything works perfect and there is nothing wrong. Please help me...