I have been trying to install frappe/bench developer version. I am getting this error continuously -
Installing for Ubuntu vivid amd64
In case you encounter an error, you can post on https://discuss.frappe.io
Adding ubuntu mariadb repo
Hit http://ams2.mirrors.digitalocean.com vivid InRelease
Hit http://ppa.launchpad.net vivid InRelease
Get:1 http://security.ubuntu.com vivid-security InRelease [64.4 kB]
Hit http://bd.archive.ubuntu.com vivid InRelease
Ign http://ppa.launchpad.net vivid InRelease
Ign http://download.opensuse.org ./ InRelease
Ign http://linux.dropbox.com vivid InRelease
Get:2 http://bd.archive.ubuntu.com vivid-updates InRelease [64.4 kB]
Ign http://ppa.launchpad.net vivid InRelease
Hit http://linux.dropbox.com vivid Release.gpg
Hit http://download.opensuse.org ./ Release.gpg
Hit http://ppa.launchpad.net vivid InRelease
Get:3 http://security.ubuntu.com vivid-security/main Sources [53.7 kB]
Hit http://download.opensuse.org ./ Release
Hit http://linux.dropbox.com vivid Release
Hit http://ams2.mirrors.digitalocean.com vivid/main amd64 Packages
Hit http://bd.archive.ubuntu.com vivid-backports InRelease
Ign http://ppa.launchpad.net vivid Release.gpg
Hit http://ams2.mirrors.digitalocean.com vivid/main i386 Packages
Get:4 http://linux.dropbox.com vivid/main amd64 Packages [1,148 B]
Get:5 http://security.ubuntu.com vivid-security/restricted Sources [3,418 B]
Hit http://ppa.launchpad.net vivid Release.gpg
Get:6 http://linux.dropbox.com vivid/main i386 Packages [1,148 B]
Get:7 http://security.ubuntu.com vivid-security/universe Sources [20.7 kB]
Hit http://download.opensuse.org ./ Packages
Hit http://ppa.launchpad.net vivid/main amd64 Packages
Get:8 http://security.ubuntu.com vivid-security/multiverse Sources [1,937 B]
Hit http://ppa.launchpad.net vivid/main i386 Packages
Get:9 http://security.ubuntu.com vivid-security/main amd64 Packages [166 kB]
Hit http://ppa.launchpad.net vivid/main Translation-en
Ign http://ppa.launchpad.net vivid Release
Ign http://ams2.mirrors.digitalocean.com vivid/main Translation-en_US
Hit http://ppa.launchpad.net vivid Release
Ign http://ams2.mirrors.digitalocean.com vivid/main Translation-en
Hit http://ppa.launchpad.net vivid/main amd64 Packages
Hit http://ppa.launchpad.net vivid/main i386 Packages
Ign http://linux.dropbox.com vivid/main Translation-en_US
Hit http://ppa.launchpad.net vivid/main Translation-en
Ign http://linux.dropbox.com vivid/main Translation-en
Ign http://download.opensuse.org ./ Translation-en_US
Ign http://download.opensuse.org ./ Translation-en
Get:10 http://security.ubuntu.com vivid-security/restricted amd64 Packages [11.2 kB]
Get:11 http://bd.archive.ubuntu.com vivid-updates/main Sources [107 kB]
Get:12 http://security.ubuntu.com vivid-security/universe amd64 Packages [66.3 kB]
Hit http://ppa.launchpad.net vivid/main amd64 Packages
Hit http://ppa.launchpad.net vivid/main i386 Packages
Hit http://ppa.launchpad.net vivid/main Translation-en
Get:13 http://security.ubuntu.com vivid-security/multiverse amd64 Packages [6,045 B]
Get:14 http://bd.archive.ubuntu.com vivid-updates/restricted Sources [4,351 B]
Get:15 http://security.ubuntu.com vivid-security/main i386 Packages [165 kB]
Get:16 http://bd.archive.ubuntu.com vivid-updates/universe Sources [47.7 kB]
Get:17 http://security.ubuntu.com vivid-security/restricted i386 Packages [10.9 kB]
Get:18 http://security.ubuntu.com vivid-security/universe i386 Packages [66.3 kB]
Err http://ppa.launchpad.net vivid/main amd64 Packages
404 Not Found
Get:19 http://bd.archive.ubuntu.com vivid-updates/multiverse Sources [1,937 B]
Err http://ppa.launchpad.net vivid/main i386 Packages
404 Not Found
Get:20 http://bd.archive.ubuntu.com vivid-updates/main amd64 Packages [260 kB]
Ign http://ppa.launchpad.net vivid/main Translation-en_US
Ign http://ppa.launchpad.net vivid/main Translation-en
Get:21 http://security.ubuntu.com vivid-security/multiverse i386 Packages [6,198 B]
Get:22 http://bd.archive.ubuntu.com vivid-updates/restricted amd64 Packages [13.6 kB]
Get:23 http://bd.archive.ubuntu.com vivid-updates/universe amd64 Packages [127 kB]
Hit http://security.ubuntu.com vivid-security/main Translation-en
Hit http://security.ubuntu.com vivid-security/multiverse Translation-en
Hit http://security.ubuntu.com vivid-security/restricted Translation-en
Hit http://security.ubuntu.com vivid-security/universe Translation-en
Get:24 http://bd.archive.ubuntu.com vivid-updates/multiverse amd64 Packages [6,045 B]
Get:25 http://bd.archive.ubuntu.com vivid-updates/main i386 Packages [257 kB]
Get:26 http://bd.archive.ubuntu.com vivid-updates/restricted i386 Packages [13.3 kB]
Get:27 http://bd.archive.ubuntu.com vivid-updates/universe i386 Packages [127 kB]
Get:28 http://bd.archive.ubuntu.com vivid-updates/multiverse i386 Packages [6,198 B]
Hit http://bd.archive.ubuntu.com vivid-backports/restricted Sources
Hit http://bd.archive.ubuntu.com vivid-backports/multiverse Sources
Hit http://bd.archive.ubuntu.com vivid-backports/restricted amd64 Packages
Hit http://bd.archive.ubuntu.com vivid-backports/multiverse amd64 Packages
Hit http://bd.archive.ubuntu.com vivid-backports/restricted i386 Packages
Hit http://bd.archive.ubuntu.com vivid-backports/multiverse i386 Packages
Hit http://bd.archive.ubuntu.com vivid-backports/multiverse Translation-en
Hit http://bd.archive.ubuntu.com vivid-backports/restricted Translation-en
Hit http://bd.archive.ubuntu.com vivid/main Sources
Hit http://bd.archive.ubuntu.com vivid/restricted Sources
Hit http://bd.archive.ubuntu.com vivid/universe Sources
Hit http://bd.archive.ubuntu.com vivid/multiverse Sources
Hit http://bd.archive.ubuntu.com vivid/main amd64 Packages
Hit http://bd.archive.ubuntu.com vivid/restricted amd64 Packages
Hit http://bd.archive.ubuntu.com vivid/universe amd64 Packages
Hit http://bd.archive.ubuntu.com vivid/multiverse amd64 Packages
Hit http://bd.archive.ubuntu.com vivid/main i386 Packages
Hit http://bd.archive.ubuntu.com vivid/restricted i386 Packages
Hit http://bd.archive.ubuntu.com vivid/universe i386 Packages
Hit http://bd.archive.ubuntu.com vivid/multiverse i386 Packages
Hit http://bd.archive.ubuntu.com vivid/main Translation-en
Hit http://bd.archive.ubuntu.com vivid/multiverse Translation-en
Hit http://bd.archive.ubuntu.com vivid/restricted Translation-en
Hit http://bd.archive.ubuntu.com vivid/universe Translation-en
Hit http://bd.archive.ubuntu.com vivid-updates/main Translation-en
Hit http://bd.archive.ubuntu.com vivid-updates/multiverse Translation-en
Hit http://bd.archive.ubuntu.com vivid-updates/restricted Translation-en
Hit http://bd.archive.ubuntu.com vivid-updates/universe Translation-en
Hit http://bd.archive.ubuntu.com vivid-backports/main Sources
Hit http://bd.archive.ubuntu.com vivid-backports/universe Sources
Hit http://bd.archive.ubuntu.com vivid-backports/main amd64 Packages
Hit http://bd.archive.ubuntu.com vivid-backports/universe amd64 Packages
Hit http://bd.archive.ubuntu.com vivid-backports/main i386 Packages
Hit http://bd.archive.ubuntu.com vivid-backports/universe i386 Packages
Hit http://bd.archive.ubuntu.com vivid-backports/main Translation-en
Hit http://bd.archive.ubuntu.com vivid-backports/universe Translation-en
Fetched 1,678 kB in 43s (38.2 kB/s)
W: Failed to fetch http://ppa.launchpad.net/olivier-berten/misc/ubuntu/dists/vivid/main/binary-amd64/Packages 404 Not Found
W: Failed to fetch http://ppa.launchpad.net/olivier-berten/misc/ubuntu/dists/vivid/main/binary-i386/Packages 404 Not Found
E: Some index files failed to download. They have been ignored, or old ones used instead.
How can i solve this?