Ser possibly has corrupted chunks, any fix?

I'm running a server off of my home computer for my friends and I had a power surge while we were playing and now my server constantly sends this error message:
18:15:34 [INFO] Chunk (-5, -11) stored at (-1, -9)
18:15:34 [INFO] net.minecraft.server.Chunk
18:15:34 [SEVERE] java.lang.Throwable
18:15:34 [SEVERE] at net.minecraft.server.ChunkProviderServer.b(ChunkProvi
derServer.java:120)
18:15:34 [SEVERE] at net.minecraft.server.World.c(World.java:202)
18:15:34 [SEVERE] at net.minecraft.server.World.getTypeId(World.java:145)
18:15:34 [SEVERE] at net.minecraft.server.BlockStationary.a(BlockStationar
y.java:56)
18:15:34 [SEVERE] at net.minecraft.server.World.i(World.java:1475)
18:15:34 [SEVERE] at net.minecraft.server.World.h(World.java:1406)
18:15:34 [SEVERE] at net.minecraft.server.MinecraftServer.h(MinecraftServe
r.java:359)
18:15:34 [SEVERE] at net.minecraft.server.MinecraftServer.run(MinecraftSer
ver.java:283)
18:15:34 [SEVERE] at net.minecraft.server.ThreadServerApplication.run(Sour
ceFile:375)
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It says that over and over again the whole time we're playing. I've turned off all of our plug-ins and it still does it, however it stops doing it if I remove the server folder and create a new world. Is there any way to fix this without losing everything we've worked so hard for?

 

Chunk Fixer

 

Thank you SO much! I thought I was up a creek lol