package lua5.1 5.1.5-8ubuntu1 failed to install/upgrade: subprocess installed post-installation script returned error exit status 2

[Tushar Chauhan]

Fetched 115 kB in 2s (48.3 kB/s)
Selecting previously unselected package lua5.1.
(Reading database ... 113410 files and directories currently installed.)
Preparing to unpack .../lua5.1_5.1.5-8ubuntu1_armhf.deb ...
Unpacking lua5.1 (5.1.5-8ubuntu1) ...
Selecting previously unselected package raspi-config.
Preparing to unpack .../raspi-config_20170207-1~xenial1.1_all.deb ...
Unpacking raspi-config (20170207-1~xenial1.1) ...
Selecting previously unselected package triggerhappy.
Preparing to unpack .../triggerhappy_0.3.4-2_armhf.deb ...
Unpacking triggerhappy (0.3.4-2) ...
Processing triggers for man-db (2.7.5-1) ...
Processing triggers for systemd (229-4ubuntu16) ...
Processing triggers for ureadahead (0.100.0-19) ...
Setting up lua5.1 (5.1.5-8ubuntu1) ...
update-alternatives: error: unable to open file '/var/lib/dpkg/alternatives/pico': Structure needs cleaning
dpkg: error processing package lua5.1 (--configure):
 subprocess installed post-installation script returned error exit status 2
dpkg: dependency problems prevent configuration of raspi-config:
 raspi-config depends on lua5.1; however:
  Package lua5.1 is not configured yet.

dpkg: error processing package raspi-config (--configure):
 dependency problems - leaving unconfigured
Setting up triggerhappy (0.3.4-2) ...
No apport report written because the error message indicates its a followup error from a previous failure.
                          Processing triggers for systemd (229-4ubuntu16) ...
Processing triggers for ureadahead (0.100.0-19) ...

I got above error when installing raspi-config is anyone know how to solve above error?

ProblemType: Package
DistroRelease: Ubuntu 16.04
Package: lua5.1 5.1.5-8ubuntu1
Uname: Linux 4.4.38-v7+ armv7l
ApportVersion: 2.20.1-0ubuntu2.5
Architecture: armhf
Date: Thu Mar 9 11:15:02 2017
DuplicateSignature:
 package:lua5.1:5.1.5-8ubuntu1
 Setting up lua5.1 (5.1.5-8ubuntu1) ...
 update-alternatives: error: unable to open file '/var/lib/dpkg/alternatives/pico': Structure needs cleaning
 dpkg: error processing package lua5.1 (--configure):
  subprocess installed post-installation script returned error exit status 2
ErrorMessage: subprocess installed post-installation script returned error exit status 2
RelatedPackageVersions:
 dpkg 1.18.4ubuntu1.1
 apt 1.2.19
SourcePackage: lua5.1
Title: package lua5.1 5.1.5-8ubuntu1 failed to install/upgrade: subprocess installed post-installation script returned error exit status 2
UpgradeStatus: No upgrade log present (probably fresh install)