Executing 'grub-install dummy' failed.

[_defalt]

Now i even get an error. grub-install: error: cannot open `/boot/efi/EFI/kali/grubx64.efi': Input/output error.

To troubleshoot this error i already added this sudo mount -o remount,rw /dev/sda+ /mnt/boot/efi command, i don't know why it's not working.

There was a warning which said something like: "can't connect to lvmetdat"

Now to trouble shoot this error i added few more lines. I edited it. See my edit and run the process again.