What were you trying to do that didn't work?

When the  /etc/grub2.cfg symbolic link is broken, the grubby command reports a misleading error:

[root@vm250-161 tmp]# ls -l /etc/grub2.cfg 
lrwxrwxrwx. 1 root root 20 Apr 13  2021 /etc/grub2.cfg -> /boot/grub2/grub.cfg
[root@vm250-161 tmp]# unlink /etc/grub2.cfg
[root@vm250-161 tmp]# grubby --default-index
error opening /boot/grub/grub.cfg for read: No such file or directory

Please provide the package NVR for which bug is seen:

1. rpm -qf /usr/sbin/grubby
   grubby-8.28-26.el7.x86_64

   Steps to reproduce

   # unlink /etc/grub2.cfg

2. grubby --default-index
   error opening /boot/grub/grub.cfg for read: No such file or directory

   Expected results

1. grubby --default-index

error opening /boot/grub2/grub.cfg for read: No such file or directory

OR

1. grubby --default-index
   error opening /etc/grub2.cfg for read: No such file or directory

   Actual results

1. grubby --default-index
   error opening /boot/grub/grub.cfg for read: No such file or directory