Light Table and Ubuntu 20.04

I have OS Ubuntu 20.04 (Focal Fossa). I tried to install IDE Light Table (for Clojure).
shem@lenovoip:~ umake ide lighttable /usr/lib/python3/dist-packages/umake/tools.py:92: YAMLLoadWarning: calling yaml.load() without Loader=… is deprecated, as the default Loader is unsafe. Please read https://msg.pyyaml.org/load for full details. self._config = yaml.load(f) Choose installation path: /home/shem/.local/share/umake/ide/lighttable Downloading and installing requirements | 100% |#########################################################################| Installing LightTable /home/shem/.local/share/umake/ide/lighttable/LightTable | |##############################################################################| Installation done shem@lenovoip:~ lighttable
lighttable: error while loading shared libraries: libgconf-2.so.4: cannot open shared object file: No such file or directory
I see the installed program icon In the Application Center but it does not start. Something went wrong? Thanks.