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java.util.ConcurrentModificationException at java.util.HashMap$Values.forEach(Unknown Source)[?:1.8.0_91] at io.github.nucleuspowered.nucleus.config.loaders.AbstractDataLoader.saveAll(AbstractDataLoader.java:30)[AbstractDataLoader.class:0.6.0-SNAPSHOT] at io.github.nucleuspowered.nucleus.Nucleus.saveData(Nucleus.java:200)[Nucleus.class:0.6.0-SNAPSHOT] at io.github.nucleuspowered.nucleus.modules.core.runnables.CoreTask.accept(CoreTask.java:35)[CoreTask.class:0.6.0-SNAPSHOT] at io.github.nucleuspowered.nucleus.modules.core.runnables.CoreTask.accept(CoreTask.java:17)[CoreTask.class:0.6.0-SNAPSHOT] at org.spongepowered.common.scheduler.SchedulerBase.lambda$startTask$0(SchedulerBase.java:177)[SchedulerBase.class:1.8.9-1890-4.2.0-BETA-1471] at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source)[?:1.8.0_91] at java.util.concurrent.FutureTask.run(Unknown Source)[?:1.8.0_91] at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)[?:1.8.0_91] at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)[?:1.8.0_91] at java.lang.Thread.run(Unknown Source)[?:1.8.0_91]