Installation via package manager fail on Ubuntu
After adding the apt-get update command i have the following error message during the process and after adding apt-get install it can not fing the package:
Ign:33 http://downloads.skewed.de/apt/ubuntu xenial/universe DEP-11 64x64 Icons
Err:25 http://downloads.skewed.de/apt/ubuntu xenial/universe Sources
404 Not Found [IP: 74.50.54.68 80]
Ign:26 http://downloads.skewed.de/apt/ubuntu xenial/universe amd64 Packages
Ign:27 http://downloads.skewed.de/apt/ubuntu xenial/universe i386 Packages
Ign:28 http://downloads.skewed.de/apt/ubuntu xenial/universe all Packages
Ign:29 http://downloads.skewed.de/apt/ubuntu xenial/universe Translation-en_US
Ign:30 http://downloads.skewed.de/apt/ubuntu xenial/universe Translation-en
Ign:32 http://downloads.skewed.de/apt/ubuntu xenial/universe amd64 DEP-11 Metadata
Ign:33 http://downloads.skewed.de/apt/ubuntu xenial/universe DEP-11 64x64 Icons
Fetched 558 kB in 15s (35,3 kB/s)
Reading package lists... Done
W: The repository 'http://downloads.skewed.de/apt/ubuntu xenial Release' does not have a Release file.
N: Data from such a repository can't be authenticated and is therefore potentially dangerous to use.
N: See apt-secure(8) manpage for repository creation and user configuration details.
W: An error occurred during the signature verification. The repository is not updated and the previous index files will be used. GPG error: http://repo.mongodb.org/apt/ubuntu xenial/mongodb-org/3.4 Release: The following signatures were invalid: KEYEXPIRED 1515625755
W: Failed to fetch http://repo.mongodb.org/apt/ubuntu/dists/xenial/mongodb-org/3.4/Release.gpg The following signatures were invalid: KEYEXPIRED 1515625755
E: Failed to fetch http://downloads.skewed.de/apt/ubuntu/dists/xenial/universe/source/Sources 404 Not Found [IP: 74.50.54.68 80]
W: Some index files failed to download. They have been ignored, or old ones used instead.
Edited by Tiago Peixoto