grub-emu is showing garbage text

Bug #1818663 reported by Joyce Babu
6
This bug affects 1 person
Affects Status Importance Assigned to Milestone
grub2 (Ubuntu)
New
Undecided
Unassigned

Bug Description

I have a remote server running Ubuntu 18.04. When I ran apt upgrade today, I got an error message from grub that original boot device is not found, asking me to select the disk for installing boot loader. As per the suggestion on the prompt, I selected all listed devices. But I still got some error messages when installing the boot loader.

I tried to run grub-emu to verify that the bootloader is installed correctly. I am getting the following screen, with lots of garbage text.

https://i.stack.imgur.com/tOrK8.png

I am also attaching a copy of stdout redirected to a text file

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