Been there. Based from experience and suggestion I got, go re-install. I hope other can help you. Good luck 
What about the previous snapshot?
what about my data. actually, I accessed it through windows but even if I reinstalled it. I think I will get this kind of error in the future too. So that means my only option is to reinstall it again and again. 
How many and which kernels do you have installed, at present?
I didn't installed any kernel. I was using default kernal that comes with the garuda linux. At night I turn off my laptop but in morning when I was trying to boot up it gave me this error. Not so sure what to do
Just a thought, but -
On reboot, at the grub screen, try down arrow to 'advanced options' and see if there are any other kernels listed. If so, try to boot from another, preferably LTS.
EDIT - you can boot a previous snapshot as @jonathon suggested earlier - have you done this yet?
Thanks it worked.
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