You may be able to eliminate the complaints about the new relic license by disabling the agent (see https://docs.newrelic.com/docs/agents/java-agent/configuration/java-agent-config-file-template).
You may get more help if you post the log file entries when the crash occurs, not just the startup.
You may also find it helpful to monitor the free memory on your server- there may be a memory leak that is causing your issues.