问Apport正在阻止我升级我的系统，我该如何修复它？

EN

(Reading database ... 135000 files and directories currently installed.)
Preparing to unpack .../apport_2.20.1-0ubuntu2.15_all.deb ...
Failed to stop apport-forward.socket: Unit apport-forward.socket not loaded.
dpkg: warning: subprocess old pre-removal script returned error exit status 5
dpkg: trying script from the new package instead ...
Failed to stop apport-forward.socket: Unit apport-forward.socket not loaded.
dpkg: error processing archive /var/cache/apt/archives/apport_2.20.1-0ubuntu2.15_all.deb (--unpack):
 subprocess new pre-removal script returned error exit status 5
/usr/bin/deb-systemd-helper: error: unable to read apport-forward.socket
Failed to get unit file state for apport-forward.socket: No such file or directory
apport-forward.socket is a disabled or a static unit, not starting it.
Errors were encountered while processing:
 /var/cache/apt/archives/apport_2.20.1-0ubuntu2.15_all.deb
E: Sub-process /usr/bin/dpkg returned an error code (1)