After some digging around Ubuntu seems to have a similar issue
https://bugs.launchpad.net/ubuntu/+source/smarty3/+bug/1986916 -- Sent from my Android device with K-9 Mail. Please excuse my brevity.
- Bug#1021571: smarty3: Parse error in /usr/share... Ed Martin
- Bug#1021571: Ubuntu is affected too Ed Martin
- Bug#1021571: smarty3: Parse error in /usr/... Mike Gabriel
- Processed: Re: Bug#1021571: smarty3: Parse... Debian Bug Tracking System
- Bug#1021571: marked as done (smarty3: Pars... Debian Bug Tracking System
- Bug#1021571: marked as done (smarty3: Pars... Debian Bug Tracking System
