Обновления Ubuntu повредили tftpd-hpa

Ubuntu 16.04 LTS Некоторые обновления Ubuntu повредила tftpd-hpa. Теперь при выполнении стандартных операций в терминале (не связанный с tftpd-hpa), различные показанные ошибки:

Processing triggers for libc-bin (2.23-0ubuntu7) ...
Processing triggers for hicolor-icon-theme (0.15-0ubuntu1) ...
Setting up tftpd-hpa (5.2+20150808-1ubuntu1.16.04.1) ...
tftpd user (tftp) already exists, doing nothing.

tftpd-hpa directory (/home/lab-user/tftpboot) already exists, doing nothing.
Job for tftpd-hpa.service failed because the control process exited with error code. See "systemctl status tftpd-hpa.service" and "journalctl -xe" for details.
invoke-rc.d: initscript tftpd-hpa, action "start" failed.
● tftpd-hpa.service - LSB: HPA's tftp server
   Loaded: loaded (/etc/init.d/tftpd-hpa; bad; vendor preset: enabled)
   Active: failed (Result: exit-code) since Sun 2017-04-16 18:22:10 EEST; 6ms ago
     Docs: man:systemd-sysv-generator(8)
  Process: 21782 ExecStart=/etc/init.d/tftpd-hpa start (code=exited, status=71)

Apr 16 18:22:10 Testlab systemd[1]: Starting LSB: HPA's tftp server...
Apr 16 18:22:10 Testlab tftpd-hpa[21782]:  * Starting HPA's tftpd in.tftpd
Apr 16 18:22:10 Testlab systemd[1]: tftpd-hpa.service: Control process exi...71
Apr 16 18:22:10 Testlab systemd[1]: Failed to start LSB: HPA's tftp server.
Apr 16 18:22:10 Testlab systemd[1]: tftpd-hpa.service: Unit entered failed...e.
Apr 16 18:22:10 Testlab systemd[1]: tftpd-hpa.service: Failed with result ...'.
Hint: Some lines were ellipsized, use -l to show in full.
dpkg: error processing package tftpd-hpa (--configure):
 subprocess installed post-installation script returned error exit status 1
Errors were encountered while processing:
 tftpd-hpa
N: Ignoring file '50unattended-upgrades.ucf-dist' in directory '/etc/apt/apt.conf.d/' as it has an invalid filename extension
E: Sub-process /usr/bin/dpkg returned an error code (1)