Seeing also this error in autopkgtests of tryton-modules-edocument-uncefact:
https://ci.debian.net/packages/t/tryton-modules-edocument-uncefact/unstable/amd64/ Indeed this error seems to be caused by incompatibility of genshi 0.7 with Python 3.7, but the latest genshi (0.7.1) available form pypi does support it. So please upgrade the package to the latest release. Thanks, Mathias -- Mathias Behrle PGP/GnuPG key availabable from any keyserver, ID: 0xD6D09BE48405BBF6 AC29 7E5C 46B9 D0B6 1C71 7681 D6D0 9BE4 8405 BBF6