Install Updates could not fetch the package cache information lists. - PPA

[Gwynfanhall]

I have not had issues before but have just received the following message when trying to update the software, any advice gratefully received:


Install Updates could not fetch the package cache information lists.
Go to https://www.freecinema2022.gq/forums/ and paste the log below into a new or existing thread for assistance.

============ Log ===========

Hit:1 http://archive.canonical.com xenial InRelease
Hit:2 http://archive.ubuntu.com/ubuntu xenial InRelease
Get:3 http://archive.ubuntu.com/ubuntu xenial-security InRelease [99.8 kB]
Ign:4 http://ppa.launchpad.net/cschramm/blueman/ubuntu xenial InRelease
Get:5 http://repository.spotify.com stable InRelease [3,316 B]
Hit:6 http://ppa.launchpad.net/nemh/systemback/ubuntu xenial InRelease
Hit:7 http://ppa.launchpad.net/otto-kesselgulasch/gimp/ubuntu xenial InRelease
Get:8 http://archive.ubuntu.com/ubuntu xenial-updates InRelease [99.8 kB]
Hit:9 http://archive.ubuntu.com/ubuntu xenial-proposed InRelease
Get:10 http://archive.ubuntu.com/ubuntu xenial-backports InRelease [97.4 kB]
Hit:11 http://ppa.launchpad.net/ubuntu-wine/ppa/ubuntu xenial InRelease
Ign:12 http://ppa.launchpad.net/cschramm/blueman/ubuntu xenial Release
Hit:13 http://repo.linuxliteos.com/linuxlite citrine InRelease
Ign:14 http://ppa.launchpad.net/cschramm/blueman/ubuntu xenial/main i386 Packages
Get:15 https://esm.ubuntu.com/infra/ubuntu xenial-infra-security InRelease [7,515 B]
Hit:16 https://esm.ubuntu.com/infra/ubuntu xenial-infra-updates InRelease
Ign:17 http://ppa.launchpad.net/cschramm/blueman/ubuntu xenial/main all Packages
Ign:18 http://ppa.launchpad.net/cschramm/blueman/ubuntu xenial/main Translation-en_US
Ign:19 http://ppa.launchpad.net/cschramm/blueman/ubuntu xenial/main Translation-en
Ign:14 http://ppa.launchpad.net/cschramm/blueman/ubuntu xenial/main i386 Packages
Ign:17 http://ppa.launchpad.net/cschramm/blueman/ubuntu xenial/main all Packages
Ign:18 http://ppa.launchpad.net/cschramm/blueman/ubuntu xenial/main Translation-en_US
Ign:19 http://ppa.launchpad.net/cschramm/blueman/ubuntu xenial/main Translation-en
Ign:5 http://repository.spotify.com stable InRelease
Ign:14 http://ppa.launchpad.net/cschramm/blueman/ubuntu xenial/main i386 Packages
Ign:17 http://ppa.launchpad.net/cschramm/blueman/ubuntu xenial/main all Packages
Ign:18 http://ppa.launchpad.net/cschramm/blueman/ubuntu xenial/main Translation-en_US
Ign:19 http://ppa.launchpad.net/cschramm/blueman/ubuntu xenial/main Translation-en
Ign:14 http://ppa.launchpad.net/cschramm/blueman/ubuntu xenial/main i386 Packages
Ign:17 http://ppa.launchpad.net/cschramm/blueman/ubuntu xenial/main all Packages
Ign:18 http://ppa.launchpad.net/cschramm/blueman/ubuntu xenial/main Translation-en_US
Ign:19 http://ppa.launchpad.net/cschramm/blueman/ubuntu xenial/main Translation-en
Ign:14 http://ppa.launchpad.net/cschramm/blueman/ubuntu xenial/main i386 Packages
Ign:17 http://ppa.launchpad.net/cschramm/blueman/ubuntu xenial/main all Packages
Ign:18 http://ppa.launchpad.net/cschramm/blueman/ubuntu xenial/main Translation-en_US
Ign:19 http://ppa.launchpad.net/cschramm/blueman/ubuntu xenial/main Translation-en
Ign:14 http://ppa.launchpad.net/cschramm/blueman/ubuntu xenial/main i386 Packages
Ign:17 http://ppa.launchpad.net/cschramm/blueman/ubuntu xenial/main all Packages
Ign:18 http://ppa.launchpad.net/cschramm/blueman/ubuntu xenial/main Translation-en_US
Ign:19 http://ppa.launchpad.net/cschramm/blueman/ubuntu xenial/main Translation-en
Err:14 http://ppa.launchpad.net/cschramm/blueman/ubuntu xenial/main i386 Packages
  404  Not Found [IP: 91.189.95.85 80]
Ign:17 http://ppa.launchpad.net/cschramm/blueman/ubuntu xenial/main all Packages
Ign:18 http://ppa.launchpad.net/cschramm/blueman/ubuntu xenial/main Translation-en_US
Ign:19 http://ppa.launchpad.net/cschramm/blueman/ubuntu xenial/main Translation-en
Fetched 308 kB in 2s (145 kB/s)
Reading package lists...
W: The repository 'http://ppa.launchpad.net/cschramm/blueman/ubuntu xenial Release' does not have a Release file.
W: GPG error: http://repository.spotify.com stable InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 5E3C45D7B312C643
W: The repository 'http://repository.spotify.com stable InRelease' is not signed.
E: Failed to fetch http://ppa.launchpad.net/cschramm/bluema...6/Packages  404  Not Found [IP: 91.189.95.85 80]
E: Some index files failed to download. They have been ignored, or old ones used instead.