Service crashed/stopped - any help diagnosing issue

Im running version 3.15 from Jan 2018

earlier the service just stopped importing data
I've checked CPU and Memory (24gb ram) and they are currently all fine with lots of headroom, however, i'm not sure what was happening around the time of the crash

Here are the logs:

INFO|7440/0|Service traccar|18-04-17 11:14:32|Missing wrapper ping within timeout of 30000
WARNING|7440/0|Service traccar|18-04-17 11:15:54|ping between java application and wrapper timed out. if this this is due to server overload consider increasing wrapper.ping.timeout
INFO|wrapper|Service traccar|18-04-17 11:16:06|calling onStop
INFO|wrapper|Service traccar|18-04-17 11:16:08|Win service stop - timeout: 30000
INFO|wrapper|Service traccar|18-04-17 11:16:09|Win service wrapper.control -> stopping application
INFO|wrapper|Service traccar|18-04-17 11:16:09|Win service stop - after shutdown
INFO|wrapper|Service traccar|18-04-17 11:16:09|Win service stop - before notify
INFO|wrapper|Service traccar|18-04-17 11:16:09|Win service terminated

This message seems to suggest server overload, however i'm not sure if this is ports, cpu ram etc
WARNING|7440/0|Service traccar|18-04-17 11:15:54|ping between java application and wrapper timed out. if this this is due to server overload consider increasing wrapper.ping.timeout

can anyone suggest where I find wrapper.ping.timeout, and what setting to change it too, and what else to do?

Usually it indicates lack of resources. Make sure you allocate enough memory for Traccar. More info:

https://www.traccar.org/optimization/