Comment 2 for bug 1637684

The logs attached to your bug report show that:
 - You have an /etc/update-motd.d/10-help-text.txt file on your system which has been customized to contain Indonesian help text in a way that, if it was done by a package, would not be policy compliant
 - This customization generated a prompt on upgrade asking whether to keep your installed version of this conffile, or take the new version of the conffile from the package
 - Either from you, or from some software component, the prompt was sent an end of file (^D) instead of an answer.

Questions for you:
 - what tool did you use to apply software updates?
 - did you see this prompt about the conffile? if so, what action did you take?
 - do you know why /etc/update-motd.d/10-help-text.txt is modified on your system?

I also see from the log that this was an error that happened when you were applying updates in June. I don't know why this apport bug report is only being submitted now. It's understandable if you don't remember what you did as part of an upgrade back in June; however, if at all possible, we would like to understand exactly what happened as part of your upgrade in order to best fix this bug.

I am able to reproduce this problem just by running apt from a commandline and hitting ^D at a conffile prompt. This part is definitely a dpkg bug, as dpkg should use the default option (default=N) on EOF instead of aborting.