New question #678950 on Yade: https://answers.launchpad.net/yade/+question/678950
While i'm installing, it has falled lots of times,here is a code error said http://ppa.launchpad.net/yade-users/external/ubuntu bionic Release' does not have a Release file., what should i do just now? thanks a lot :) hty@hty-System-Product-Name:~$ sudo add-apt-repository ppa:yade- users/external More recent version of various external packages, which are less functional or buggy in ubuntu repositories. More info: https://launchpad.net/~yade-users/+archive/ubuntu/external Press [ENTER] to continue or Ctrl-c to cancel adding it. Hit:1 http://cn.archive.ubuntu.com/ubuntu bionic InRelease Hit:2 http://cn.archive.ubuntu.com/ubuntu bionic-updates InRelease Hit:3 http://security.ubuntu.com/ubuntu bionic-security InRelease Hit:4 http://cn.archive.ubuntu.com/ubuntu bionic-backports InRelease Ign:5 http://ppa.launchpad.net/yade-users/external/ubuntu bionic InRelease Err:6 http://ppa.launchpad.net/yade-users/external/ubuntu bionic Release 404 Not Found [IP: 91.189.95.83 80] Reading package lists... Done E: The repository 'http://ppa.launchpad.net/yade-users/external/ubuntu bionic 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. -- You received this question notification because your team yade-users is an answer contact for Yade. _______________________________________________ Mailing list: https://launchpad.net/~yade-users Post to : [email protected] Unsubscribe : https://launchpad.net/~yade-users More help : https://help.launchpad.net/ListHelp

