It seems you have configured additional ESPs for grub but they are not mountable.
Please include the output of
sudo debconf-get-selections | grep grub-efi/install_devices sudo ls -lh /dev/disk/by-id sudo lsblk -P -O
To solve the issue on your system, run
sudo dpkg-reconfigure shim-signed
and only select the partition mounted to /boot/efi.
It seems you have configured additional ESPs for grub but they are not mountable.
Please include the output of
sudo debconf- get-selections | grep grub-efi/ install_ devices
sudo ls -lh /dev/disk/by-id
sudo lsblk -P -O
To solve the issue on your system, run
sudo dpkg-reconfigure shim-signed
and only select the partition mounted to /boot/efi.