Comment 2 for bug 1747390

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seagle (seagle0128) wrote :

Similar issue while upgrading Ubuntu Mate from 16.04 to 18.04.

(Reading database ... 324225 files and directories currently installed.)
Preparing to unpack .../libidn11_1.33-2.1ubuntu1_amd64.deb ...
dpkg: error processing archive /var/cache/apt/archives/libidn11_1.33-2.1ubuntu1_amd64.deb (--unpack):
 triggers ci file contains unknown directive syntax
Errors were encountered while processing:
 /var/cache/apt/archives/libidn11_1.33-2.1ubuntu1_amd64.deb
E: Sub-process /usr/bin/dpkg returned an error code (1)
A package failed to install. Trying to recover: