New to Ubuntu, and recently updated to 16.04 (yes, yes, I probably should have waited being new and all).
Generally it's working well...but I'm having some update problems. The dreaded red triangle in the upper righthand corner. I've tried doing some searching on my own, but to no avail. When I tried updating through the software update, I get the following notice.
W: http://dl.google.com/linux/chrome/deb/dists/stable/Release.gpg: Signature by key 4CCA1EAF950CEE4AB83976DCA040830F7FAC5991 uses weak digest algorithm (SHA1),
W: There is no public key available for the following key IDs:
1397BC53640DB551,
W: The repository 'http://ppa.launchpad.net/conscioususer/polly-daily/ubuntu xenial Release' does not have a Release file,
W: Data from such a repository can't be authenticated and is therefore potentially dangerous to use.,
W: See apt-secure(8) manpage for repository creation and user configuration details.,
E: Failed to fetch http://ppa.launchpad.net/conscioususer/polly-daily/ubuntu/dists/xenial/main/source/Sources 404 Not Found,
E: Failed to fetch http:// ppa.launchpad.net/conscioususer/polly-daily/ubuntu/dists/xenial/main/binary-amd64/Packages 404 Not Found,
E: Failed to fetch http:// ppa.launchpad.net/conscioususer/polly-daily/ubuntu/dists/xenial/main/binary-i386/Packages 404 Not Found,
E: Some index files failed to download. They have been ignored, or old ones used instead.
Now, I'm not an idiot, and have checked around to see if I could find the problem myself, but nothing seems to be posted for this problem in 16.04. Can anyone help?
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