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2 hours agoCould be a UEFI bug in the VM itself;
Could also be that you didn’t sign your boot image since that command seems to load the secure boot signing key into the UEFI firmware, if you cleared other signing keys then potentially no code can load. You would have to load the keys for whatever UEFI firmware vendor is used (presumably that made by the VM software maker) or sign it yourself, etc.
That would make it stop at the end of the bootloader with decryption failure, not full bricking