Error update

[Florencia Artucio]

Hit:1 http://archive.canonical.com xenial InRelease
Hit:2 http://repo.linuxliteos.com/linuxlite citrine InRelease
Hit:3 http://ppa.launchpad.net/nemh/systemback/ubuntu xenial InRelease
Ign:4 https://download.sublimetext.com apt/stable/ InRelease
Hit:5 http://us.archive.ubuntu.com/ubuntu xenial InRelease
Hit:6 http://us.archive.ubuntu.com/ubuntu xenial-security InRelease
Hit:7 http://ppa.launchpad.net/otto-kesselgulasch/gimp/ubuntu xenial InRelease
Hit:8 http://us.archive.ubuntu.com/ubuntu xenial-updates InRelease
Hit:9 http://us.archive.ubuntu.com/ubuntu xenial-proposed InRelease
Hit:10 http://us.archive.ubuntu.com/ubuntu xenial-backports InRelease
Hit:11 http://ppa.launchpad.net/ubuntu-wine/ppa/ubuntu xenial InRelease
Ign:12 https://download.sublimetext.com apt/stable/ Release
Ign:13 https://download.sublimetext.com apt/stable/ Packages.diff/Index
Ign:14 https://download.sublimetext.com apt/stable/ Translation-en_US
Ign:15 https://download.sublimetext.com apt/stable/ Translation-en
Ign:16 https://download.sublimetext.com apt/stable/ Packages
Ign:14 https://download.sublimetext.com apt/stable/ Translation-en_US
Ign:15 https://download.sublimetext.com apt/stable/ Translation-en
Ign:16 https://download.sublimetext.com apt/stable/ Packages
Ign:14 https://download.sublimetext.com apt/stable/ Translation-en_US
Ign:15 https://download.sublimetext.com apt/stable/ Translation-en
Ign:16 https://download.sublimetext.com apt/stable/ Packages
Ign:14 https://download.sublimetext.com apt/stable/ Translation-en_US
Ign:15 https://download.sublimetext.com apt/stable/ Translation-en
Ign:16 https://download.sublimetext.com apt/stable/ Packages
Ign:14 https://download.sublimetext.com apt/stable/ Translation-en_US
Ign:15 https://download.sublimetext.com apt/stable/ Translation-en
Ign:16 https://download.sublimetext.com apt/stable/ Packages
Ign:14 https://download.sublimetext.com apt/stable/ Translation-en_US
Ign:15 https://download.sublimetext.com apt/stable/ Translation-en
Err:16 https://download.sublimetext.com apt/stable/ Packages
  server certificate verification failed. CAfile: /etc/ssl/certs/ca-certificates.crt CRLfile: none
Reading package lists...
W: The repository 'https://download.sublimetext.com apt/stable/ Release' does not have a Release file.
E: Failed to fetch https://download.sublimetext.com/apt/stable/Packages  server certificate verification failed. CAfile: /etc/ssl/certs/ca-certificates.crt CRLfile: none
E: Some index files failed to download. They have been ignored, or old ones used instead.

[trinidad]

Code:

sudo apt install ca-certificates

Try that.

TC

[Şerban S.]

Code:

sudo apt install ca-certificates

Try that.

TC

The error message points exactely to the problem:

W: The repository 'https://download.sublimetext.com apt/stable/ Release' does not have a Release file.

That means that the appropriate version is still in the development cycle, hence, unavailable.
Unchecking the PPA, solves the update problem.
See this post:
https://www.linuxliteos.com/forums/updat...n#msg59184

Best regards!