I kali linux 2018, when I started up kali linux a grub terminal showed up, I don't know why is it happening, can anyone explain? and what should you suggest me to do now? I have tried methods on internet but no use. Picture attached.
I've tried using the method in "GRUB starts in command line after reboot" but it doesn't work.
When i exit grub this shows up, and apparently i have ubuntu installed too?

