The render is different from the camera view I am doing the Blender Guru doughnut, the view is like that on the left, but the render on the right is different from it, as if the weight painting has not been applied at all. What could have gone wrong?
Actually you've created a keyframe on the particle's Vertex Group Density, so even if you toggle it, it doesn't take it into account, you need to select the object, open the Timeline and delete the keyframe.