Can you give a little more background info? What distro are you using, are you dual booting, is it a new install, did you make changes to your kernel, your partitions or grub before that?
While it's clear that grub couldn't find a kernel to boot, we need these Infos to help you find a solution.
When looking at the ASUS list on the Archwiki, your specific model is not listed but a few other zenbooks have problems with the sound. It could help to turn off fast boot in UEFI if you're dual booting and take a look at alsamixer:
https://forums.linuxmint.com/viewtopic.php?t=91453
Linux Mint, until I made a mistake during a version upgrade and aptitude had a memory leak while trying to escape dependency hell and roll every package back. Then I replaced it with arch and am happy to be on a rolling release distro.
Basically, every floating point number represents a range of numbers. Which can lead to small errors like this. It has also to do with trying to represent a decimal number in binary, which works fine for integers but not for rational numbers.
Can you give a little more background info? What distro are you using, are you dual booting, is it a new install, did you make changes to your kernel, your partitions or grub before that?
While it's clear that grub couldn't find a kernel to boot, we need these Infos to help you find a solution.