Because it occurs every time grub is updated when you have a broken system that only works because boot-repair made a copy of the main grub image. When grub is then updated, your system is still trying to use the old main image, but with the new modules.
Because it occurs every time grub is updated when you have a broken system that only works because boot-repair made a copy of the main grub image. When grub is then updated, your system is still trying to use the old main image, but with the new modules.