You edited your /etc/default/grub file and fouled it up:
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash"
usbhid.quirks=0x0c45:0x7603:0x4
The option you added at the end needs to be within the quotes.
** Changed in: grub2 (Ubuntu)
Status: Confirmed => Invalid
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https://bugs.launchpad.net/bugs/1539997
Title:
package grub-efi-amd64 2.02~beta2-9ubuntu1.7 failed to
install/upgrade: subprocess installed post-installation script
returned error exit status 127
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