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This exception has no message.
java.lang.NullPointerException: 	at io.github.nucleuspowered.nucleus.modules.playerinfo.commands.ListPlayerCommand.getPlayerSubjects(ListPlayerCommand.java:129)	at io.github.nucleuspowered.nucleus.modules.playerinfo.commands.ListPlayerCommand.lambda$null$2(ListPlayerCommand.java:107)	at java.util.stream.ReferencePipeline$2$1.accept(Unknown Source)	at java.util.ArrayList$ArrayListSpliterator.forEachRemaining(Unknown Source)	at java.util.stream.AbstractPipeline.copyInto(Unknown Source)	at java.util.stream.AbstractPipeline.wrapAndCopyInto(Unknown Source)	at java.util.stream.ReduceOps$ReduceOp.evaluateSequential(Unknown Source)	at java.util.stream.AbstractPipeline.evaluate(Unknown Source)	at java.util.stream.ReferencePipeline.collect(Unknown Source)	at io.github.nucleuspowered.nucleus.modules.playerinfo.commands.ListPlayerCommand.lambda$listByPermissionGroup$4(ListPlayerCommand.java:107)	at java.util.ArrayList.forEach(Unknown Source)	at io.github.nucleuspowered.nucleus.modules.playerinfo.commands.ListPlayerCommand.listByPermissionGroup(ListPlayerCommand.java:105)	at io.github.nucleuspowered.nucleus.modules.playerinfo.commands.ListPlayerCommand.executeCommand(ListPlayerCommand.java:82)	at io.github.nucleuspowered.nucleus.internal.command.AbstractCommand.startExecute(AbstractCommand.java:412)	at io.github.nucleuspowered.nucleus.internal.command.AbstractCommand.lambda$execute$3(AbstractCommand.java:395)	at org.spongepowered.api.scheduler.Task$Builder.lambda$execute$0(Task.java:138)	at org.spongepowered.common.scheduler.SchedulerBase.lambda$startTask$0(SchedulerBase.java:177)	at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source)	at java.util.concurrent.FutureTask.run(Unknown Source)	at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)	at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)	at java.lang.Thread.run(Unknown Source)