i think i found the problem, the webport 80 is in use, but i dont know how to solve the problem
2020-03-17 10:41:02 INFO: SELECT COUNT(*) FROM traccar.DATABASECHANGELOG
2020-03-17 10:41:02 INFO: Reading from traccar.DATABASECHANGELOG
2020-03-17 10:41:02 INFO: SELECT * FROM traccar.DATABASECHANGELOG ORDER BY DATEEXECUTED ASC, ORDEREXECUTED ASC
2020-03-17 10:41:02 INFO: Successfully released change log lock
2020-03-17 10:41:02 INFO: Logging initialized @6892ms to org.eclipse.jetty.util.log.Slf4jLog
2020-03-17 10:41:02 INFO: Your platform does not provide complete low-level API for accessing direct buffers reliably. Unless explicitly requested, heap buffer will always be preferred to avoid potential system instability.
2020-03-17 10:41:03 INFO: Operating system name: Linux version: 5.3.18-1-pve architecture: amd64
2020-03-17 10:41:03 INFO: Java runtime name: OpenJDK 64-Bit Server VM vendor: Oracle Corporation version: 11.0.5+10-LTS
2020-03-17 10:41:03 INFO: Memory limit heap: 30688mb non-heap: 0mb
2020-03-17 10:41:03 INFO: Character encoding: ANSI_X3.4-1968 charset: US-ASCII
2020-03-17 10:41:03 INFO: Version: 4.8
2020-03-17 10:41:03 INFO: Starting server...
2020-03-17 10:41:04 INFO: jetty-9.4.26.v20200117; built: 2020-01-17T12:35:33.676Z; git: 7b38981d25d14afb4a12ff1f2596756144edf695; jvm 11.0.5+10-LTS
2020-03-17 10:41:04 INFO: Started o.t.w.@4fee14b{/,null,AVAILABLE}
2020-03-17 10:41:04 INFO: DefaultSessionIdManager workerName=node0
2020-03-17 10:41:04 INFO: No SessionScavenger set, using defaults
2020-03-17 10:41:04 INFO: node0 Scavenging every 660000ms
2020-03-17 10:41:05 INFO: Started o.e.j.s.ServletContextHandler@7bde704a{/,null,AVAILABLE}
2020-03-17 10:41:05 WARN: Web server start failed - Address already in use - BindException (... < WebServer:159 < Main:118 < *:104)
okay i am stupid, found the problem.
forgot to change the port in the conf file from 80 to 8082....
maybe someone can help me.