I received the following email from my server:
Please resolve them manually.
Reason: 2017-06-02 00:04:22 INFO: pum is called with arguments: ['--update', '--json']
2017-06-02 00:04:30 INFO: updating packages: isc-dhcp-common libldap-2.4-2 ldap-utils isc-dhcp-client libpq5
2017-06-02 00:04:30 ERROR: Failed to fetch http://ubuntu.mirror.serverloft.de/...p/ldap-utils_2.4.31-1+nmu2ubuntu8.4_amd64.deb 404 Not Found
Failed to fetch http://ubuntu.mirror.serverloft.de/...ibldap-2.4-2_2.4.31-1+nmu2ubuntu8.4_amd64.deb 404 Not Found
Failed to fetch http://ubuntu.mirror.serverloft.de/.../isc-dhcp-client_4.2.4-7ubuntu12.10_amd64.deb 404 Not Found
Failed to fetch http://ubuntu.mirror.serverloft.de/.../isc-dhcp-common_4.2.4-7ubuntu12.10_amd64.deb 404 Not Found
Failed to fetch http://ubuntu.mirror.serverloft.de/...ql-9.3/libpq5_9.3.17-0ubuntu0.14.04_amd64.deb 404 Not Found
2017-06-02 00:04:30 ERROR: Exited with returncode 1.
What does this message mean? Was the update server unavailable? Other problems?
Please resolve them manually.
Reason: 2017-06-02 00:04:22 INFO: pum is called with arguments: ['--update', '--json']
2017-06-02 00:04:30 INFO: updating packages: isc-dhcp-common libldap-2.4-2 ldap-utils isc-dhcp-client libpq5
2017-06-02 00:04:30 ERROR: Failed to fetch http://ubuntu.mirror.serverloft.de/...p/ldap-utils_2.4.31-1+nmu2ubuntu8.4_amd64.deb 404 Not Found
Failed to fetch http://ubuntu.mirror.serverloft.de/...ibldap-2.4-2_2.4.31-1+nmu2ubuntu8.4_amd64.deb 404 Not Found
Failed to fetch http://ubuntu.mirror.serverloft.de/.../isc-dhcp-client_4.2.4-7ubuntu12.10_amd64.deb 404 Not Found
Failed to fetch http://ubuntu.mirror.serverloft.de/.../isc-dhcp-common_4.2.4-7ubuntu12.10_amd64.deb 404 Not Found
Failed to fetch http://ubuntu.mirror.serverloft.de/...ql-9.3/libpq5_9.3.17-0ubuntu0.14.04_amd64.deb 404 Not Found
2017-06-02 00:04:30 ERROR: Exited with returncode 1.
What does this message mean? Was the update server unavailable? Other problems?