Error executing command: java.lang.NullPointerException

Hello,

after installing openHAB2.2, when i try to start openHAB2.2 i get the error
Error executing command: java.lang.NullPointerException

Hello,

please tell me which dependencies i have to install.
Thamk you

Klaus

pi@raspberrypi:/tmp $ sudo service openhab2 status
● openhab2.service - Starts and stops the openHAB Home Automation Bus
Loaded: loaded (/lib/systemd/system/openhab2.service; disabled)
Active: inactive (dead)
Docs: http://www.openhab.org

Dez 23 18:19:21 raspberrypi start.sh[2493]: / __ / __ / _ / __ / // / /| | / __ |
Dez 23 18:19:21 raspberrypi start.sh[2493]: / /
/ / // / __/ / / / __ / ___ |/ // /
Dez 23 18:19:21 raspberrypi start.sh[2493]: _/ ./_// /// /// |/_____/
Dez 23 18:19:21 raspberrypi start.sh[2493]: /_/ 2.2.0
Dez 23 18:19:21 raspberrypi start.sh[2493]: Release Build
Dez 23 18:19:21 raspberrypi start.sh[2493]: Hit ‘’ for a list of available commands
Dez 23 18:19:21 raspberrypi start.sh[2493]: and ‘[cmd] --help’ for help on a specific command.
Dez 23 18:19:21 raspberrypi start.sh[2493]: Hit ‘’ or type ‘system:shutdown’ or ‘logout’ to shutdown openHAB.
Dez 23 18:19:23 raspberrypi start.sh[2493]: openhab> Error executing command: java.lang.NullPointerException
Dez 23 18:19:35 raspberrypi systemd[1]: [/lib/systemd/system/openhab2.service:12] Executable path is not absolute, ignoring: kill -SIGINT $MAINPID

even i have this issue with

start.sh[602]: openhab> Error executing command: java.lang.NullPointerException

if i run ./start.sh directly in terminal it works, but autostart service is not able to start openhab after reboot