Error in random cases with X11DISPLAY

[Pedro]

i have a issue with a "console app" running into Heroku.
in any cases i get this issue when send a LOG.

2019-04-07T18:05:36.006421+00:00 app[worker.1]: Apr 07, 2019 2:05:36 PM com.mindscapehq.raygun4java.core.messages.RaygunEnvironmentMessage <init> 2019-04-07T18:05:36.006445+00:00 app[worker.1]: INFO: Couldn't access all environment data. If you are running in GAE or a restricted environment this is expected 2019-04-07T18:05:36.006447+00:00 app[worker.1]: java.awt.HeadlessException: 2019-04-07T18:05:36.006449+00:00 app[worker.1]: No X11 DISPLAY variable was set, but this program performed an operation which requires it. 2019-04-07T18:05:36.006450+00:00 app[worker.1]: at sun.java2d.HeadlessGraphicsEnvironment.getMaximumWindowBounds(HeadlessGraphicsEnvironment.java:85) 2019-04-07T18:05:36.006452+00:00 app[worker.1]: at com.mindscapehq.raygun4java.core.messages.RaygunEnvironmentMessage.<init>(RaygunEnvironmentMessage.java:46) 2019-04-07T18:05:36.006453+00:00 app[worker.1]: at com.mindscapehq.raygun4java.core.RaygunMessageBuilder.SetEnvironmentDetails(RaygunMessageBuilder.java:47) 2019-04-07T18:05:36.006455+00:00 app[worker.1]: at com.fatboyindustrial.raygun.RaygunAppender.append(RaygunAppender.java:97) 2019-04-07T18:05:36.006457+00:00 app[worker.1]: at com.fatboyindustrial.raygun.RaygunAppender.append(RaygunAppender.java:51) 2019-04-07T18:05:36.006458+00:00 app[worker.1]: at ch.qos.logback.core.AppenderBase.doAppend(AppenderBase.java:82) 2019-04-07T18:05:36.006459+00:00 app[worker.1]: at ch.qos.logback.core.spi.AppenderAttachableImpl.appendLoopOnAppenders(AppenderAttachableImpl.java:51) 2019-04-07T18:05:36.006461+00:00 app[worker.1]: at ch.qos.logback.classic.Logger.appendLoopOnAppenders(Logger.java:270) 2019-04-07T18:05:36.006462+00:00 app[worker.1]: at ch.qos.logback.classic.Logger.callAppenders(Logger.java:257) 2019-04-07T18:05:36.006464+00:00 app[worker.1]: at ch.qos.logback.classic.Logger.buildLoggingEventAndAppend(Logger.java:421) 2019-04-07T18:05:36.006465+00:00 app[worker.1]: at ch.qos.logback.classic.Logger.filterAndLog_0_Or3Plus(Logger.java:383) 2019-04-07T18:05:36.006467+00:00 app[worker.1]: at ch.qos.logback.classic.Logger.warn(Logger.java:692) 2019-04-07T18:05:36.006468+00:00 app[worker.1]: at reactor.util.Loggers$Slf4JLogger.warn(Loggers.java:299) 2019-04-07T18:05:36.006470+00:00 app[worker.1]: at discord4j.command.CommandBootstrapper.lambda$static$0(CommandBootstrapper.java:49) 2019-04-07T18:05:36.006471+00:00 app[worker.1]: at discord4j.command.util.AbstractCommandDispatcher.lambda$null$4(AbstractCommandDispatcher.java:66) 2019-04-07T18:05:36.006472+00:00 app[worker.1]: at reactor.core.publisher.FluxOnErrorResume$ResumeSubscriber.onError(FluxOnErrorResume.java:88) 2019-04-07T18:05:36.006474+00:00 app[worker.1]: at reactor.core.publisher.FluxOnAssembly$OnAssemblySubscriber.onError(FluxOnAssembly.java:358) 2019-04-07T18:05:36.006475+00:00 app[worker.1]: at reactor.core.publisher.FluxMapFuseable$MapFuseableSubscriber.onError(FluxMapFuseable.java:134) 2019-04-07T18:05:36.006477+00:00 app[worker.1]: at reactor.core.publisher.FluxOnAssembly$OnAssemblySubscriber.onError(FluxOnAssembly.java:358) 2019-04-07T18:05:36.006479+00:00 app[worker.1]: at reactor.core.publisher.Operators$MultiSubscriptionSubscriber.onError(Operators.java:1747) 2019-04-07T18:05:36.006480+00:00 app[worker.1]: at reactor.core.publisher.FluxOnAssembly$OnAssemblySubscriber.onError(FluxOnAssembly.java:358) 2019-04-07T18:05:36.006481+00:00 app[worker.1]: at reactor.core.publisher.Operators$MonoSubscriber.onError(Operators.java:1550) 2019-04-07T18:05:36.006482+00:00 app[worker.1]: at reactor.core.publisher.MonoIgnoreThen$ThenIgnoreInner.onError(MonoIgnoreThen.java:235) 2019-04-07T18:05:36.006484+00:00 app[worker.1]: at reactor.core.publisher.FluxContextStart$ContextStartSubscriber.onError(FluxContextStart.java:117) 2019-04-07T18:05:36.006485+00:00 app[worker.1]: at reactor.core.publisher.FluxOnAssembly$OnAssemblySubscriber.onError(FluxOnAssembly.java:358) 2019-04-07T18:05:36.006487+00:00 app[worker.1]: at reactor.core.publisher.MonoPublishOn$PublishOnSubscriber.run(MonoPublishOn.java:184) 2019-04-07T18:05:36.006488+00:00 app[worker.1]: at reactor.core.scheduler.ElasticScheduler$DirectScheduleTask.run(ElasticScheduler.java:291) 2019-04-07T18:05:36.006490+00:00 app[worker.1]: at reactor.core.scheduler.SchedulerTask.call(SchedulerTask.java:50) 2019-04-07T18:05:36.006491+00:00 app[worker.1]: at reactor.core.scheduler.SchedulerTask.call(SchedulerTask.java:27) 2019-04-07T18:05:36.006493+00:00 app[worker.1]: at java.util.concurrent.FutureTask.run(FutureTask.java:266) 2019-04-07T18:05:36.006495+00:00 app[worker.1]: at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$201(ScheduledThreadPoolExecutor.java:180) 2019-04-07T18:05:36.006496+00:00 app[worker.1]: at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:293) 2019-04-07T18:05:36.006497+00:00 app[worker.1]: at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) 2019-04-07T18:05:36.006499+00:00 app[worker.1]: at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) 2019-04-07T18:05:36.006501+00:00 app[worker.1]: at java.lang.Thread.run(Thread.java:748) 2019-04-07T18:05:36.006502+00:00 app[worker.1]:

[Greg]

INFO: Couldn't access all environment data. If you are running in GAE or a restricted environment this is expected 2019-04-07T18:05:36.006447+00:00 app[worker.1]: java.awt.HeadlessException: 2019-04-07T18:05:36.006449+00:00 app[worker.1]: No X11 DISPLAY variable was set, but this program performed an operation which requires it.

I believe that is internal to the Raygun classes, but also harmless - as it says it is expected in a headless environment.