I am trying to follow these instructions to set up OpenHab with the MySensors Serial Gateway, but ran into a problem when installing the Java (Third command.). Here is a copy of the command and error:
pi@openhabpi:~ $ sudo apt-key adv --keyserver hkp://keyserver.ubuntu.com:80 --recv-keys EEA14886
Executing: /tmp/apt-key-gpghome.3nAEDiCNLy/gpg.1.sh --keyserver hkp://keyserver.ubuntu.com:80 --recv-keys EEA14886
gpg: failed to start the dirmngr '/usr/bin/dirmngr': No such file or directory
gpg: connecting dirmngr at '/tmp/apt-key-gpghome.3nAEDiCNLy/S.dirmngr' failed: No such file or directory
gpg: keyserver receive failed: No dirmngr
Please let me know if I missed something.
BTW, this is using the raspbian stretch lite version, dated 2018-03-13.