crashed on /give <user> 115 1

[22:54:19] [Server thread/ERROR]: Couldn't process command
java.lang.NullPointerException
        at abg.s(SourceFile:375) ~[minecraft_server.13w41b.jar:?]
        at abg.E(SourceFile:614) ~[minecraft_server.13w41b.jar:?]
        at as.b(SourceFile:71) ~[minecraft_server.13w41b.jar:?]
        at y.a(SourceFile:58) [minecraft_server.13w41b.jar:?]
        at mp.d(SourceFile:486) [minecraft_server.13w41b.jar:?]
        at mp.a(SourceFile:473) [minecraft_server.13w41b.jar:?]
        at ic.a(SourceFile:37) [minecraft_server.13w41b.jar:?]
        at ic.a(SourceFile:9) [minecraft_server.13w41b.jar:?]
        at ek.a(SourceFile:146) [minecraft_server.13w41b.jar:?]
        at ml.c(SourceFile:134) [minecraft_server.13w41b.jar:?]
        at net.minecraft.server.MinecraftServer.u(SourceFile:529) [minecraft_server.13w41b.jar:?]
        at le.u(SourceFile:259) [minecraft_server.13w41b.jar:?]
        at net.minecraft.server.MinecraftServer.t(SourceFile:441) [minecraft_server.13w41b.jar:?]
        at net.minecraft.server.MinecraftServer.run(SourceFile:358) [minecraft_server.13w41b.jar:?]
        at kt.run(SourceFile:617) [minecraft_server.13w41b.jar:?]
[22:54:19] [Server thread/INFO]: inox lost connection: TranslatableComponent{key='disconnect.genericReason', args=[Internal Exception: io.netty.handler.codec.EncoderException: java.lang.NullPointerException], siblings=[], style=Style{ha$
[22:54:19] [Server thread/INFO]: inox left the game
[22:54:19] [Server thread/INFO]: zyxep lost connection: TranslatableComponent{key='disconnect.genericReason', args=[Internal Exception: io.netty.handler.codec.EncoderException: java.lang.NullPointerException], siblings=[], style=Style{h$
[22:54:19] [Server thread/INFO]: zyxep left the game

When we joined the server quickly after did it say this

[22:54:37] [User Authenticator #20/INFO]: UUID of player inox is 6fda73cd22cb4aff94f5a6ca98e6947d
[22:54:38] [Server thread/INFO]: inox[/201.124.132.124:57284] logged in with entity id 1529322 at (427.9160724268075, 58.0, 475.29489917862566)
[22:54:38] [Server thread/INFO]: inox joined the game
[22:54:38] [Server thread/ERROR]: Item entity 1529323 has no item?!
[22:54:38] [Server thread/ERROR]: Couldn't load chunk
s: Loading entity NBT
        at qe.f(SourceFile:1088) ~[minecraft_server.13w41b.jar:?]
        at qk.a(SourceFile:155) ~[minecraft_server.13w41b.jar:?]
        at aoi.a(SourceFile:289) ~[minecraft_server.13w41b.jar:?]
        at aoi.a(SourceFile:78) ~[minecraft_server.13w41b.jar:?]
        at aoi.a(SourceFile:66) ~[minecraft_server.13w41b.jar:?]
        at mb.f(SourceFile:119) [minecraft_server.13w41b.jar:?]
        at mb.c(SourceFile:72) [minecraft_server.13w41b.jar:?]
        at mb.d(SourceFile:108) [minecraft_server.13w41b.jar:?]
        at afe.e(SourceFile:310) [minecraft_server.13w41b.jar:?]
        at afe.d(SourceFile:875) [minecraft_server.13w41b.jar:?]
        at ky.c(SourceFile:206) [minecraft_server.13w41b.jar:?]
        at ky.a(SourceFile:101) [minecraft_server.13w41b.jar:?]
        at mu.c(SourceFile:89) [minecraft_server.13w41b.jar:?]
        at mu.a(SourceFile:54) [minecraft_server.13w41b.jar:?]
        at ek.a(SourceFile:148) [minecraft_server.13w41b.jar:?]
        at ml.c(SourceFile:134) [minecraft_server.13w41b.jar:?]
        at net.minecraft.server.MinecraftServer.u(SourceFile:529) [minecraft_server.13w41b.jar:?]
        at le.u(SourceFile:259) [minecraft_server.13w41b.jar:?]
        at net.minecraft.server.MinecraftServer.t(SourceFile:441) [minecraft_server.13w41b.jar:?]
        at net.minecraft.server.MinecraftServer.run(SourceFile:358) [minecraft_server.13w41b.jar:?]
        at kt.run(SourceFile:617) [minecraft_server.13w41b.jar:?]
Caused by: java.lang.NullPointerException
        at rh.b(SourceFile:134) ~[minecraft_server.13w41b.jar:?]
        at vn.a(SourceFile:246) ~[minecraft_server.13w41b.jar:?]
        at vn.a(SourceFile:189) ~[minecraft_server.13w41b.jar:?]
        at qe.f(SourceFile:1081) ~[minecraft_server.13w41b.jar:?]
        ... 20 more

pretty sad because there was important stuff in that chunk.