java.lang.RuntimeException: java.io.IOException: Failed to copy full contents from './world/elec332/playerData.dat' to '/var/btm/server/world/elec332/playerData.dat_back'

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java.io.IOException: Failed to copy full contents from './world/elec332/playerData.dat' to '/var/btm/server/world/elec332/playerData.dat_back'
java.io.IOException: Failed to copy full contents from './world/elec332/playerData.dat' to '/var/btm/server/world/elec332/playerData.dat_back'
at org.apache.commons.io.FileUtils.doCopyFile(FileUtils.java:1157)
at org.apache.commons.io.FileUtils.copyFile(FileUtils.java:1091)
at elec332.core.server.ServerHelper.toFile(ServerHelper.java:434)
at elec332.core.server.ServerHelper$EventHandler.onWorldSave(ServerHelper.java:332)
at net.minecraftforge.fml.common.eventhandler.ASMEventHandler_181_EventHandler_onWorldSave_Save.invoke(.dynamic)
at net.minecraftforge.fml.common.eventhandler.ASMEventHandler.invoke(ASMEventHandler.java:49)
at net.minecraft.server.MinecraftServer.func_71267_a(MinecraftServer.java:354)
at com.surgeplay.reschedule.Reschedule.runScheduler(Reschedule.java:21)
at net.minecraft.server.MinecraftServer.func_184107_a(MinecraftServer.java:569)
at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:436)
at java.lang.Thread.run(Thread.java:745)

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