Error
不止一套发行版被指定下载(trusty trusty-updates trusty-backports xenial xenial-updates xenial-backports bionic bionic-updates bionic-backports cosmic cosmic-updates cosmic-backports disco)
不止一套发行版被指定下载(trusty trusty-updates trusty-backports xenial xenial-updates xenial-backports bionic bionic-updates bionic-backports cosmic cosmic-updates cosmic-backports disco)