Have you tried searching the forum? This has been discussed multiple times already.
Solved changing the java command on the service file
Pasted here for future references
[Unit]
Description=traccar
After=network.target
[Service]
Type=simple
WorkingDirectory=/opt/traccar
#ExecStart=/opt/traccar/jre/bin/java -jar tracker-server.jar conf/traccar.xml
ExecStart=//usr/bin/java -jar tracker-server.jar conf/traccar.xml
SyslogIdentifier=traccar
SuccessExitStatus=143
[Install]
WantedBy=multi-user.target
Recently I migrated my postgresql databases from version 12 to version 14, including of course Traccar.
I'm facing this issue starting Traccar:
It was running with Java Open JDK 8, I updated to JDK 11, but still same issue
How I can solve it?