Install libsmltk0 by entering the following commands in the terminal:
sudo apt update sudo apt install libsmltk0
Description:
library for SyncML-DS (SyncML Data Sync) clients (shared libraries)
The Synthesis SyncML engine supports SyncML versions 1.0, 1.1 and 1.2 including complex features like data filtering, suspend & resume, vCard/vCalendar format conversion in a way completely transparent to the user of the library. . These are the shared libraries (see also libsynthesis0)
Homepage: http://www.synthesis.ch/indefero/index.php/p/libsynthesis/
Version: 3.4.0.47.5+syncevolution-1.5.3-1
Section: universe/libs