This was the result of my upload of reform-tools 1.50 which hit the mirrors a few hours ago. That version included a patch from a contributor who said that they had tested it but alas it didn’t work as intended and I’m unable to test on the pocket because i do not have one. The change is from June this year and today I finally uploaded it. After it was found to be broken by users on IRC, I uploaded a fixed version 1.52 which will hit mirrors in half an hour if everything goes according to plan.
I’m sorry for the inconvenience. The easiest way to fix this is probably by downloading the .deb package from here once it’s there: