My minecraft server is completely reseted after my pc immediately shuts down

So I play my minecraft server with my friends then all of a sudden my pc shuts down and so when I open my server again and my world just completely reset, I'm in a completely new world, my 1 month of hardwork is gone, everything just reseted, please I need help.
Edit : also when I open my run.bat on my server folder it shows something wrong
Error loading saved data: villages
java.util.zip.ZipException: Not in GZIP format
at java.util.zip.GZIPInputStream.readHeader(Unknown Source) ~[?:1.8.0_201]
at java.util.zip.GZIPInputStream.<init>(Unknown Source) ~[?:1.8.0_201]
at java.util.zip.GZIPInputStream.<init>(Unknown Source) ~[?:1.8.0_201]
at hi.a(SourceFile:25) ~[server.jar:?]
at cby.a(SourceFile:117) ~[server.jar:?]
at cby.a(SourceFile:52) [server.jar:?]
at cck.a(SourceFile:31) [server.jar:?]
at ayf.a(SourceFile:20) [server.jar:?]
at td.i_(SourceFile:141) [server.jar:?]
at net.minecraft.server.MinecraftServer.a(SourceFile:352) [server.jar:?]
at net.minecraft.server.MinecraftServer.a(SourceFile:341) [server.jar:?]
at so.d(SourceFile:251) [server.jar:?]
at net.minecraft.server.MinecraftServer.run(SourceFile:566) [server.jar:?]
at java.lang.Thread.run(Unknown Source) [?:1.8.0_201]
[17:40:02] [Server thread/ERROR]: Error loading saved data: villages_nether
java.util.zip.ZipException: Not in GZIP format
at java.util.zip.GZIPInputStream.readHeader(Unknown Source) ~[?:1.8.0_201]
at java.util.zip.GZIPInputStream.<init>(Unknown Source) ~[?:1.8.0_201]
at java.util.zip.GZIPInputStream.<init>(Unknown Source) ~[?:1.8.0_201]
at hi.a(SourceFile:25) ~[server.jar:?]
at cby.a(SourceFile:117) ~[server.jar:?]
at cby.a(SourceFile:52) [server.jar:?]
at cck.a(SourceFile:31) [server.jar:?]
at ayf.a(SourceFile:20) [server.jar:?]
at sy.b(SourceFile:65) [server.jar:?]
at net.minecraft.server.MinecraftServer.a(SourceFile:363) [server.jar:?]
at net.minecraft.server.MinecraftServer.a(SourceFile:341) [server.jar:?]
at so.d(SourceFile:251) [server.jar:?]
at net.minecraft.server.MinecraftServer.run(SourceFile:566) [server.jar:?]
at java.lang.Thread.run(Unknown Source) [?:1.8.0_201]
[17:40:02] [Server thread/ERROR]: Error loading saved data: villages_end
java.util.zip.ZipException: Not in GZIP format
at java.util.zip.GZIPInputStream.readHeader(Unknown Source) ~[?:1.8.0_201]
at java.util.zip.GZIPInputStream.<init>(Unknown Source) ~[?:1.8.0_201]
at java.util.zip.GZIPInputStream.<init>(Unknown Source) ~[?:1.8.0_201]
at hi.a(SourceFile:25) ~[server.jar:?]
at cby.a(SourceFile:117) ~[server.jar:?]
at cby.a(SourceFile:52) [server.jar:?]
at cck.a(SourceFile:31) [server.jar:?]
at ayf.a(SourceFile:20) [server.jar:?]
at sy.b(SourceFile:65) [server.jar:?]
at net.minecraft.server.MinecraftServer.a(SourceFile:370) [server.jar:?]
at net.minecraft.server.MinecraftServer.a(SourceFile:341) [server.jar:?]
at so.d(SourceFile:251) [server.jar:?]
at net.minecraft.server.MinecraftServer.run(SourceFile:566) [server.jar:?]
at java.lang.Thread.run(Unknown Source) [?:1.8.0_201]