RHEL is unable to boot due to lack of $kernelopts in /boot/grub2/grubenv

Issue

• RHEL is unable to boot due to lack of kernelopts variable in /boot/grub2/grubenv or lack of /boot/grub2/grubenv file.
• For UEFI, file path is /boot/efi/EFI/redhat/grubenv.
• On RHEL 8.1 and 8.2, grub.cfg has a fallback default_kernelopts variable , what is this used for?

set default_kernelopts="root=/dev/mapper/rhel_efi8-root ro resume=/dev/mapper/rhel_efi8-swap rd.lvm.lv=rhel_efi8/root rd.lvm.lv=rhel_efi8/swap "