Hit:1 http://ppa.launchpad.net/morphis/anbox-support/ubuntu bionic InRelease
Get:2 http://security.ubuntu.com/ubuntu bionic-security InRelease [88.7 kB]
Ign:3 http://download.opensuse.org/repositories/home:/strycore/xUbuntu_18.04 ./ InRelease
Hit:4 http://archive.ubuntu.com/ubuntu bionic InRelease
Hit:5 http://archive.canonical.com/ubuntu bionic InRelease
Ign:6 http://packages.linuxmint.com tessa InRelease
Hit:7 http://download.opensuse.org/repositories/home:/strycore/xUbuntu_18.04 ./ Release
Hit:8 http://ppa.launchpad.net/team-xbmc/ppa/ubuntu bionic InRelease
Hit:9 http://archive.ubuntu.com/ubuntu bionic-updates InRelease
Get:10 http://archive.ubuntu.com/ubuntu bionic-backports InRelease [74.6 kB]
Hit:12 http://packages.linuxmint.com tessa Release
Ign:13 http://repo.mongodb.org/apt/debian jessie/mongodb-org/4.0 InRelease
Get:14 https://mega.nz/linux/MEGAsync/xUbuntu_18.04 ./ InRelease [1,487 B]
Get:15 http://repo.mongodb.org/apt/debian jessie/mongodb-org/4.0 Release [2,393 B]
Get:17 http://repo.mongodb.org/apt/debian jessie/mongodb-org/4.0 Release.gpg [801 B]
Get:19 http://repo.mongodb.org/apt/debian jessie/mongodb-org/4.0/main amd64 Packages [5,897 B]
Hit:18 https://packages.gitlab.com/gitlab/gitlab-ce/ubuntu xenial InRelease
Ign:20 https://packages.gitlab.com/gitlab/gitlab-ee/linuxmint utopic InRelease
Err:21 https://packages.gitlab.com/gitlab/gitlab-ee/linuxmint utopic Release
  404  Not Found [IP: 54.153.54.194 443]
Reading package lists... Done
E: The repository 'https://packages.gitlab.com/gitlab/gitlab-ee/linuxmint utopic Release' does not have a Release file.
N: Updating from such a repository can't be done securely, and is therefore disabled by default.
N: See apt-secure(8) manpage for repository creation and user configuration details.