[Bug 1692307] Re: package grub-pc 2.02~beta2-36ubuntu3.10 failed to install/upgrade: subprocess installed post-installation script returned error exit status 2

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** Tags removed: need-duplicate-check

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Title:
  package grub-pc 2.02~beta2-36ubuntu3.10 failed to install/upgrade:
  subprocess installed post-installation script returned error exit
  status 2

Status in grub2 package in Ubuntu:
  New

Bug description:
  seems normal upgrading failed.

  ProblemType: Package
  DistroRelease: Ubuntu 16.04
  Package: grub-pc 2.02~beta2-36ubuntu3.10
  Uname: Linux 4.7.0-040700-generic x86_64
  ApportVersion: 2.20.1-0ubuntu2.6
  Architecture: amd64
  Date: Sat May 20 15:37:03 2017
  DuplicateSignature:
   package:grub-pc:2.02~beta2-36ubuntu3.10
   Setting up grub-pc (2.02~beta2-36ubuntu3.10) ...
   /var/lib/dpkg/info/grub-pc.postinst: line 703: syntax error near unexpected token `fi'
   dpkg: error processing package grub-pc (--configure):
    subprocess installed post-installation script returned error exit status 2
  ErrorMessage: subprocess installed post-installation script returned error exit status 2
  InstallationDate: Installed on 2015-12-02 (535 days ago)
  InstallationMedia: Ubuntu-GNOME 16.04 LTS "Xenial Xerus" - Alpha amd64 (20151027)
  ProcCmdLine: BOOT_IMAGE=/vmlinuz-4.7.0-040700-generic root=/dev/mapper/lvm--vg-ubuntu--root ro rootflags=subvol=@ cryptopts=target=crypto,source=/dev/disk/by-uuid/4a1951b7-3604-4891-8ec6-3f5c9112d30d quiet splash vt.handoff=7
  RelatedPackageVersions:
   dpkg 1.18.4ubuntu1.2
   apt  1.2.20
  SourcePackage: grub2
  Title: package grub-pc 2.02~beta2-36ubuntu3.10 failed to install/upgrade: subprocess installed post-installation script returned error exit status 2
  UpgradeStatus: No upgrade log present (probably fresh install)

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