Open Server cant restart after a possible crash (noone online)

[Kachuu]

Summary of the problem Server cant restart after a possible crash (noone online)

Pack Version 3.0.8

What is the bug? After a crash during the morning when noone was online, we cant start the server again.

This is a small cut out from the crashlog,
Time: 3/29/17 9:17 PM
Description: Exception in server tick loop

java.lang.NullPointerException: Exception in server tick loop
at java.util.HashMap.putMapEntries(HashMap.java:500)
at java.util.HashMap.putAll(HashMap.java:784)
at us.illyohs.itsbecauseuhasnogoodspawn.handler.IslandHandler.loadIslandList(IslandHandler.java:78)
at net.minecraftforge.fml.common.eventhandler.ASMEventHandler_832_IslandHandler_loadIslandList_Load.invoke(.dynamic)
at net.minecraftforge.fml.common.eventhandler.ASMEventHandler.invoke(ASMEventHandler.java:90)
at net.minecraftforge.fml.common.eventhandler.EventBus.post(EventBus.java:185)
at net.minecraft.server.MinecraftServer.func_71247_a(MinecraftServer.java:263)
at net.minecraft.server.dedicated.DedicatedServer.func_71197_b(DedicatedServer.java:266)
at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:431)
at java.lang.Thread.run(Thread.java:745)


any possible answer to get the server running again ?

Mod & Version Sky Factory 3, version 3.0.8

Link to log file http://paste.feed-the-beast.com/view/2d9f7f7d

Is it repeatable? Yes.

Known Fix

 

[Kachuu]

If i load the map into a single player game, the map has been corrupted badly, blocks changed into other blocks and so on. But taking a working backup of the map doesn't help either.