[10:25:09] [Thread-490/WARN]: Exception in thread "Thread-490"
[10:25:09] [Thread-490/WARN]: java.util.ConcurrentModificationException
[10:25:09] [Thread-490/WARN]: 	at java.util.ArrayList$Itr.checkForComodification(Unknown Source)
[10:25:09] [Thread-490/WARN]: 	at java.util.ArrayList$Itr.next(Unknown Source)
[10:25:09] [Thread-490/WARN]: 	at org.yaml.snakeyaml.serializer.Serializer.anchorNode(Serializer.java:135)
[10:25:09] [Thread-490/WARN]: 	at org.yaml.snakeyaml.serializer.Serializer.anchorNode(Serializer.java:146)
[10:25:09] [Thread-490/WARN]: 	at org.yaml.snakeyaml.serializer.Serializer.serialize(Serializer.java:108)
[10:25:09] [Thread-490/WARN]: 	at org.yaml.snakeyaml.Yaml.dumpAll(Yaml.java:272)
[10:25:09] [Thread-490/WARN]: 	at org.yaml.snakeyaml.Yaml.dumpAll(Yaml.java:262)
[10:25:09] [Thread-490/WARN]: 	at org.yaml.snakeyaml.Yaml.dumpAll(Yaml.java:234)
[10:25:09] [Thread-490/WARN]: 	at org.yaml.snakeyaml.Yaml.dump(Yaml.java:209)
[10:25:09] [Thread-490/WARN]: 	at org.bukkit.configuration.file.YamlConfiguration.saveToString(YamlConfiguration.java:40)
[10:25:09] [Thread-490/WARN]: 	at org.bukkit.configuration.file.FileConfiguration.save(FileConfiguration.java:103)
[10:25:09] [Thread-490/WARN]: 	at fr.xephi.authme.settings.CustomConfiguration.save(CustomConfiguration.java:56)
[10:25:09] [Thread-490/WARN]: 	at fr.xephi.authme.settings.PlayersLogs.savePlayerLogs(PlayersLogs.java:56)
[10:25:09] [Thread-490/WARN]: 	at fr.xephi.authme.datasource.FlatFile.setUnlogged(FlatFile.java:662)
[10:25:09] [Thread-490/WARN]: 	at fr.xephi.authme.datasource.CacheDataSource.setUnlogged(CacheDataSource.java:219)
[10:25:09] [Thread-490/WARN]: 	at fr.xephi.authme.datasource.DatabaseCalls$19.run(DatabaseCalls.java:319)
[10:25:09] [Thread-490/WARN]: 	at java.lang.Thread.run(Unknown Source)