apt - Shutter is not getting installed in Ubuntu 16.04 due to unmet dependencies

I tried to install the Shutter in Ubuntu 16.04 following these 3 commands

1. sudo add-apt-repository ppa:shutter/ppa


2. sudo apt-get update


3. sudo apt-get install shutter

After running the step 2 i.e sudo apt-get update my output is this :

Ign:1 http://repo.mongodb.org/apt/ubuntu trusty/mongodb-org/3.2 InRelease
Ign:2 http://dl.google.com/linux/chrome/deb stable InRelease                                                                                  
Hit:3 http://dl.google.com/linux/chrome/deb stable Release                                                                                    
Ign:4 http://archive.canonical.com/ubuntu precise InRelease                                                                                   
Ign:5 http://extras.ubuntu.com/ubuntu precise InRelease                                                                                    
Hit:7 http://repo.mongodb.org/apt/ubuntu trusty/mongodb-org/3.2 Release                                              
Hit:9 https://deb.nodesource.com/node_6.x xenial InRelease                                                           

Hit:10 http://ppa.launchpad.net/git-core/ppa/ubuntu xenial InRelease                                                 
Hit:11 http://archive.canonical.com/ubuntu precise Release                                                           
Hit:12 http://extras.ubuntu.com/ubuntu precise Release                                                               
Ign:13 http://us.archive.ubuntu.com/ubuntu precise InRelease                                   
Hit:16 http://ppa.launchpad.net/rvm/smplayer/ubuntu xenial InRelease      
Hit:17 http://us.archive.ubuntu.com/ubuntu precise-security InRelease     
Hit:18 http://ppa.launchpad.net/shutter/ppa/ubuntu xenial InRelease       
Get:19 http://us.archive.ubuntu.com/ubuntu precise-updates InRelease [55.7 kB]
Hit:20 http://ppa.launchpad.net/ubuntuhandbook1/apps/ubuntu xenial InRelease
Hit:21 http://ppa.launchpad.net/videolan/master-daily/ubuntu xenial InRelease          

Hit:22 http://ppa.launchpad.net/videolan/stable-daily/ubuntu xenial InRelease          
Hit:23 http://us.archive.ubuntu.com/ubuntu precise-backports InRelease    
Hit:24 http://ppa.launchpad.net/webupd8team/atom/ubuntu xenial InRelease
Hit:25 http://ppa.launchpad.net/webupd8team/brackets/ubuntu xenial InRelease
Hit:26 http://us.archive.ubuntu.com/ubuntu precise Release                
Hit:28 http://ppa.launchpad.net/webupd8team/java/ubuntu xenial InRelease  
Hit:29 http://ppa.launchpad.net/webupd8team/sublime-text-3/ubuntu xenial InRelease
Fetched 55.7 kB in 3s (14.5 kB/s)
Reading package lists... Done
W: http://archive.canonical.com/ubuntu/dists/precise/Release.gpg: Signature by key 630239CC130E1A7FD81A27B140976EAF437D05B5 uses weak digest algorithm (SHA1)

W: http://extras.ubuntu.com/ubuntu/dists/precise/Release.gpg: Signature by key C47415DFF48C09645B78609416126D3A3E5C1192 uses weak digest algorithm (SHA1)
W: http://us.archive.ubuntu.com/ubuntu/dists/precise-security/InRelease: Signature by key 630239CC130E1A7FD81A27B140976EAF437D05B5 uses weak digest algorithm (SHA1)
W: http://us.archive.ubuntu.com/ubuntu/dists/precise-updates/InRelease: Signature by key 630239CC130E1A7FD81A27B140976EAF437D05B5 uses weak digest algorithm (SHA1)
W: http://us.archive.ubuntu.com/ubuntu/dists/precise-backports/InRelease: Signature by key 630239CC130E1A7FD81A27B140976EAF437D05B5 uses weak digest algorithm (SHA1)
W: http://us.archive.ubuntu.com/ubuntu/dists/precise/Release.gpg: Signature by key 630239CC130E1A7FD81A27B140976EAF437D05B5 uses weak digest algorithm (SHA1)

Output from the step 3 i.e sudo apt-get install shutter I am getting

 Reading package lists... Done

    Building dependency tree       
    Reading state information... Done
    Some packages could not be installed. This may mean that you have
    requested an impossible situation or if you are using the unstable
    distribution that some required packages have not yet been created
    or been moved out of Incoming.
    The following information may help to resolve the situation:

    The following packages have unmet dependencies:
     shutter : Depends: gnome-web-photo but it is not going to be installed

               Depends: libgnome2-perl but it is not going to be installed
               Depends: libgnome2-vfs-perl but it is not going to be installed
               Depends: libgnome2-wnck-perl but it is not going to be installed
               Depends: libgoo-canvas-perl but it is not going to be installed
               Depends: libgtk2-appindicator-perl but it is not installable
               Depends: libgtk2-imageview-perl but it is not going to be installed
               Depends: libgtk2-trayicon-perl but it is not going to be installed
               Depends: libgtk2-unique-perl but it is not going to be installed
               Depends: libnet-oauth-perl but it is not going to be installed
               Depends: libproc-processtable-perl but it is not going to be installed

               Depends: libjson-xs-perl but it is not going to be installed
    E: Unable to correct problems, you have held broken packages.

In order to solve the E: Unable to correct problems, you have held broken packages.
I tried this

No success till now. Any help is appreciated.

P.S After checking my /etc/apt/sources.list, I found each link such that it mentions the precise in it.

#############################################################
################### OFFICIAL UBUNTU REPOS ###################
#############################################################

###### Ubuntu Main Repos
# deb http://us.archive.ubuntu.com/ubuntu/ precise main restricted universe mul$
# deb-src http://us.archive.ubuntu.com/ubuntu/ precise main restricted universe$


###### Ubuntu Update Repos
deb http://us.archive.ubuntu.com/ubuntu/ precise-security main restricted unive$
deb http://us.archive.ubuntu.com/ubuntu/ precise-updates main restricted univer$
deb http://us.archive.ubuntu.com/ubuntu/ precise-backports main restricted univ$
deb-src http://us.archive.ubuntu.com/ubuntu/ precise-security main restricted u$
deb-src http://us.archive.ubuntu.com/ubuntu/ precise-updates main restricted un$
deb-src http://us.archive.ubuntu.com/ubuntu/ precise-backports main restricted $

###### Ubuntu Partner Repo

deb http://archive.canonical.com/ubuntu precise partner
deb-src http://archive.canonical.com/ubuntu precise partner

Thanks to the hints from @George, I was able to finally install shutter. I disabled all the repositories in the list mentioning precise. Surprisingly every repository has mention of it, replaced it with the following list

###### Ubuntu Main Repos
deb http://us.archive.ubuntu.com/ubuntu/ xenial main restricted universe multiverse 
deb-src http://us.archive.ubuntu.com/ubuntu/ xenial main restricted universe multiverse 


###### Ubuntu Update Repos
deb http://us.archive.ubuntu.com/ubuntu/ xenial-security main restricted universe multiverse 
deb http://us.archive.ubuntu.com/ubuntu/ xenial-updates main restricted universe multiverse 
deb http://us.archive.ubuntu.com/ubuntu/ xenial-proposed main restricted universe multiverse 
deb http://us.archive.ubuntu.com/ubuntu/ xenial-backports main restricted universe multiverse 
deb-src http://us.archive.ubuntu.com/ubuntu/ xenial-security main restricted universe multiverse 
deb-src http://us.archive.ubuntu.com/ubuntu/ xenial-updates main restricted universe multiverse 
deb-src http://us.archive.ubuntu.com/ubuntu/ xenial-proposed main restricted universe multiverse 
deb-src http://us.archive.ubuntu.com/ubuntu/ xenial-backports main restricted universe multiverse 

Then again try the sudo apt-get update and then sudo apt-get install shutter to successfully install it.