root@ArshiaAghaei:/var/lib/apt# cd /var/lib/apt
root@ArshiaAghaei:/var/lib/apt# sudo mv lists lists.old
root@ArshiaAghaei:/var/lib/apt# sudo mkdir -p lists/partial
root@ArshiaAghaei:/var/lib/apt# sudo apt-get clean
root@ArshiaAghaei:/var/lib/apt# sudo apt-get update
Ign http://security.ubuntu.com trusty-security InRelease
Ign http://ppa.launchpad.net trusty InRelease
Get:1 http://security.ubuntu.com trusty-security Release.gpg [933 B]
Ign http://ppa.launchpad.net trusty InRelease
Get:2 http://security.ubuntu.com trusty-security Release [62.0 kB]
Ign http://ppa.launchpad.net trusty Release.gpg
Get:3 http://ppa.launchpad.net trusty Release.gpg [316 B]
Ign http://ppa.launchpad.net trusty Release
Get:4 http://ppa.launchpad.net trusty Release [15.1 kB]
Get:5 http://security.ubuntu.com trusty-security/main i386 Packages [190 kB]
Ign http://archive.canonical.com trusty InRelease
Ign http://us.archive.ubuntu.com trusty InRelease
Get:6 http://archive.canonical.com trusty Release.gpg [933 B]
Get:7 http://dl.google.com stable InRelease [1,540 B]
60% [7 InRelease gpgv 1,540 B] [Waiting for headers] [Connecting to archive.canSplitting up /var/lib/apt/lists/partial/dl.google.com_linux_chrome_deb_dists_stabIgn http://dl.google.com stable InRelease
E: GPG error: http://dl.google.com stable InRelease: Clearsigned file isn't valid, got 'NODATA' (does the network require authentication?