[MC-126599] Failed to save chunk java.lang.NullPointerException: null

[10:10:43] [Server thread/ERROR]: Failed to save chunk
java.lang.NullPointerException: null
        at gr.a(SourceFile:91) ~[minecraft_server.jar:?]
        at bie.a(SourceFile:423) ~[minecraft_server.jar:?]
        at bie.a(SourceFile:188) [minecraft_server.jar:?]
        at ry.b(SourceFile:225) [minecraft_server.jar:?]
        at ry.d(SourceFile:287) [minecraft_server.jar:?]
        at rz.k_(SourceFile:199) [minecraft_server.jar:?]
        at net.minecraft.server.MinecraftServer.w(SourceFile:694) [minecraft_server.jar:?]
        at rk.w(SourceFile:354) [minecraft_server.jar:?]
        at net.minecraft.server.MinecraftServer.v(SourceFile:627) [minecraft_server.jar:?]
        at net.minecraft.server.MinecraftServer.run(SourceFile:532) [minecraft_server.jar:?]
        at java.lang.Thread.run(Thread.java:748) [?:1.8.0_151]
[10:10:49] [Server thread/ERROR]: Failed to save chunk
java.lang.NullPointerException: null
        at gr.a(SourceFile:91) ~[minecraft_server.jar:?]
        at bie.a(SourceFile:423) ~[minecraft_server.jar:?]
        at bie.a(SourceFile:188) [minecraft_server.jar:?]
        at ry.b(SourceFile:225) [minecraft_server.jar:?]
        at ry.a(SourceFile:251) [minecraft_server.jar:?]
        at rz.a(SourceFile:845) [minecraft_server.jar:?]
        at net.minecraft.server.MinecraftServer.a(SourceFile:446) [minecraft_server.jar:?]
        at net.minecraft.server.MinecraftServer.v(SourceFile:645) [minecraft_server.jar:?]
        at net.minecraft.server.MinecraftServer.run(SourceFile:532) [minecraft_server.jar:?]
        at java.lang.Thread.run(Thread.java:748) [?:1.8.0_151]
[10:10:49] [Server thread/ERROR]: Failed to save chunk
java.lang.NullPointerException: null
        at gr.a(SourceFile:91) ~[minecraft_server.jar:?]
        at bie.a(SourceFile:423) ~[minecraft_server.jar:?]
        at bie.a(SourceFile:188) [minecraft_server.jar:?]
        at ry.b(SourceFile:225) [minecraft_server.jar:?]
        at ry.d(SourceFile:287) [minecraft_server.jar:?]
        at rz.k_(SourceFile:199) [minecraft_server.jar:?]
        at net.minecraft.server.MinecraftServer.w(SourceFile:694) [minecraft_server.jar:?]
        at rk.w(SourceFile:354) [minecraft_server.jar:?]
        at net.minecraft.server.MinecraftServer.v(SourceFile:627) [minecraft_server.jar:?]
        at net.minecraft.server.MinecraftServer.run(SourceFile:532) [minecraft_server.jar:?]
        at java.lang.Thread.run(Thread.java:748) [?:1.8.0_151]

1.13-pre2

[18:11:11] [Server thread/ERROR]: Failed to save chunk
java.lang.NullPointerException: null
	at cah.a(SourceFile:115) ~[1.13-pre2.jar:?]
	at bra.a(SourceFile:674) ~[1.13-pre2.jar:?]
	at bra.a(SourceFile:456) ~[1.13-pre2.jar:?]
	at bra.a(SourceFile:216) [1.13-pre2.jar:?]
	at sm.b(SourceFile:217) [1.13-pre2.jar:?]
	at sm.d(SourceFile:273) [1.13-pre2.jar:?]
	at sn.i_(SourceFile:203) [1.13-pre2.jar:?]
	at net.minecraft.server.MinecraftServer.w(SourceFile:693) [1.13-pre2.jar:?]
	at net.minecraft.server.MinecraftServer.v(SourceFile:626) [1.13-pre2.jar:?]
	at dir.v(SourceFile:156) [1.13-pre2.jar:?]
	at net.minecraft.server.MinecraftServer.run(SourceFile:531) [1.13-pre2.jar:?]
	at java.lang.Thread.run(Thread.java:745) [?:1.8.0_25]

Linked issues

relates to 1

MC-131088 Corrupted chunk in the middle of an already generated oceanmonument after updating from 18w16a to 1.13-pre1 Resolved

Attachments

latest.log

New World--.zip

Comments 14

Somebody62 2018-03-02T19:28:48Z

What exactly were you doing when this occured? What type of world were you in? Can you reproduce the error? Did anything else out of the ordinary occur in your world? We need more details.

Nicklas Ekstrand 2018-03-04T07:42:43Z

I also encountered this error. I use a copy of our server world running 1.12.2. When I start a copy of this world in 18w09a I get these printouts continuously, i.e., several of them every 45s.

The problem is easy to reproduce but in case you need a test world to show the problem, please let me know.

[Mod] redstonehelper 2018-03-05T00:58:35Z

It would be appreciated if you could upload your world.

Nicklas Ekstrand 2018-03-06T21:06:40Z

Hi. My world is 6GB and not that easy to upload. But I selected the .mca files that I considered to be relevant and uploaded the world to Google drive: https://drive.google.com/file/d/11GaefZl3kZcmT1KhsUYoi7W9T_u5NlmI/view?usp=sharing

From the logs it's possible to find:

[21:50:47] [Server thread/INFO]: NicklasE99[/192.168.1.5:60070] logged in with entity id 170 at (4639.194719865757, 151.0, 5722.499564972287)
[21:50:47] [Server thread/INFO]: NicklasE99 joined the game
[21:51:09] [Server thread/ERROR]: Failed to save chunk
java.lang.NullPointerException: null
        at gw.a(SourceFile:91) ~[minecraft_server.18w10a.jar:?]
        at bil.a(SourceFile:422) ~[minecraft_server.18w10a.jar:?]
        at bil.a(SourceFile:187) [minecraft_server.18w10a.jar:?]
        at sd.b(SourceFile:225) [minecraft_server.18w10a.jar:?]
        at sd.a(SourceFile:251) [minecraft_server.18w10a.jar:?]
        at se.a(SourceFile:845) [minecraft_server.18w10a.jar:?]
        at net.minecraft.server.MinecraftServer.a(SourceFile:446) [minecraft_server.18w10a.jar:?]
        at net.minecraft.server.MinecraftServer.v(SourceFile:645) [minecraft_server.18w10a.jar:?]
        at net.minecraft.server.MinecraftServer.run(SourceFile:532) [minecraft_server.18w10a.jar:?]
        at java.lang.Thread.run(Thread.java:748) [?:1.8.0_151]

BR,

Nicklas

Marc Schmider 2018-03-16T18:22:21Z

Same here

[18:20:38] [Server thread/ERROR]: Failed to save chunk
java.lang.NullPointerException: null
        at gw.a(SourceFile:91) ~[minecraft_server.18w11a.jar:?]
        at bio.a(SourceFile:422) ~[minecraft_server.18w11a.jar:?]
        at bio.a(SourceFile:187) [minecraft_server.18w11a.jar:?]
        at sd.b(SourceFile:225) [minecraft_server.18w11a.jar:?]
        at sd.a(SourceFile:251) [minecraft_server.18w11a.jar:?]
        at se.a(SourceFile:845) [minecraft_server.18w11a.jar:?]
        at net.minecraft.server.MinecraftServer.a(SourceFile:446) [minecraft_server.18w11a.jar:?]
        at net.minecraft.server.MinecraftServer.v(SourceFile:645) [minecraft_server.18w11a.jar:?]
        at net.minecraft.server.MinecraftServer.run(SourceFile:532) [minecraft_server.18w11a.jar:?]
        at java.lang.Thread.run(Thread.java:844) [?:?]

4 more comments

Colton Jelsema 2018-05-04T00:23:29Z

Happened to me in 18w16a.
Initially shows:

17:13:49	bjs	Failed to save chunk
java.lang.NullPointerException
	at gz.a(SourceFile:91)
	at bjs.a(SourceFile:426)
	at bjs.a(SourceFile:190)
	at sg.b(SourceFile:225)
	at sg.d(SourceFile:287)
	at sh.k_(SourceFile:199)
	at net.minecraft.server.MinecraftServer.w(SourceFile:696)
	at net.minecraft.server.MinecraftServer.v(SourceFile:629)
	at dbc.v(SourceFile:156)
	at net.minecraft.server.MinecraftServer.run(SourceFile:534)
	at java.lang.Thread.run(Thread.java:745)
17:13:56	bjs	Failed to save chunk
java.lang.NullPointerException
	at gz.a(SourceFile:91)
	at bjs.a(SourceFile:426)
	at bjs.a(SourceFile:190)
	at sg.b(SourceFile:225)
	at sg.a(SourceFile:251)
	at sh.a(SourceFile:716)
	at net.minecraft.server.MinecraftServer.a(SourceFile:448)
	at net.minecraft.server.MinecraftServer.v(SourceFile:647)
	at dbc.v(SourceFile:156)
	at net.minecraft.server.MinecraftServer.run(SourceFile:534)
	at java.lang.Thread.run(Thread.java:745)

then begins showing

Failed to save chunk
java.lang.NullPointerException

any time the game would try to save chunks, specifically when I went to the nether and back.

MukiTanuki 2018-05-16T04:01:34Z

still occurring in 18w20a:

Failed to save chunk java.lang.NullPointerException at bzh.a(SourceFile:115) at bqb.a(SourceFile:634) at bqb.a(SourceFile:430) at bqb.a(SourceFile:191) at si.b(SourceFile:227) at si.d(SourceFile:289) at sj.i_(SourceFile:203) at net.minecraft.server.MinecraftServer.w(SourceFile:689) at net.minecraft.server.MinecraftServer.v(SourceFile:622) at dhq.v(SourceFile:156) at net.minecraft.server.MinecraftServer.run(SourceFile:527) at java.lang.Thread.run(Thread.java:745)

I continue to get crashes quite commonly too on just about any world in 1.13, although I'm not sure if it's related to this bug or not.

Meri Diana 2018-05-29T20:12:56Z

Confirmed for 18w22a.

The output is displayed each time I enter that world.
I just freshly created it in order to test another bug, and saw this by chance in the log.

I zipped that world and attached it to this bugpost.

Additional note, in case it's important: I created the world in 18w16a and went from there straight to 18w22a.

md_5 2018-06-08T23:22:34Z

Seeing this on 1.13-pre1 also

Meri Diana 2018-06-15T18:37:42Z

Confirmed for 1.13 pre-2.

Easily reproducable by creating a Debug world.
Attached the log output as screenshots here.

There is also an error regarding loading a block entity for moving_piston in Debug worlds, followed be the "Failed to save chunk" error. I don't know if this should be or is already an own bugpost, thus I attached that output as well.

[media]

Michael 2018-06-15T23:29:51Z

Also confirmed for 1.13 pre-2. Crash occurred, but no crash report was generated. Log attached.

[media]

^{Happened in a world upgraded from 18w11a}

Kristian Haveland 2018-06-24T16:02:02Z

Still in 1.13 pre-3

Adrian Östergård 2018-06-29T07:22:34Z

This should be fixed in 1.13-pre5. Please reopen if it's not.

Asadefa 2019-06-11T22:42:50Z

NOT FIXED HAPPENS IN 1.13.1