i dont knwo why this happens, but sometime the console give me this text:
00:30:35] [Craft Scheduler Thread - 36/WARN]: org.apache.commons.lang.UnhandledException: Plugin BanManager v5.6.0 generated an exception while executing task 24
at org.bukkit.craftbukkit.v1_8_R3.scheduler.CraftAsyncTask.run(CraftAsyncTask.java:56)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:745)
Caused by: java.lang.NullPointerException
at com.mysql.jdbc.ResultSetImpl.setRowPositionValidity(ResultSetImpl.java:852)
at com.mysql.jdbc.ResultSetImpl.next(ResultSetImpl.java:7183)
at me.confuser.banmanager.internal.ormlite.jdbc.JdbcDatabaseResults.next(JdbcDatabaseResults.java:64)
at me.confuser.banmanager.internal.ormlite.jdbc.JdbcDatabaseResults.first(JdbcDatabaseResults.java:56)
at me.confuser.banmanager.internal.ormlite.stmt.SelectIterator.hasNextThrow(SelectIterator.java:79)
at me.confuser.banmanager.internal.ormlite.stmt.SelectIterator.hasNext(SelectIterator.java:98)
at me.confuser.banmanager.runnables.BanSync.newBans(BanSync.java:48)
at me.confuser.banmanager.runnables.BanSync.run(BanSync.java:32)
at org.bukkit.craftbukkit.v1_8_R3.scheduler.CraftTask.run(CraftTask.java:71)
at org.bukkit.craftbukkit.v1_8_R3.scheduler.CraftAsyncTask.run(CraftAsyncTask.java:53)
... 3 more

Duplicate of #321