tested with 2 void superflat worlds
created world in 1.12.2
game crashes when loading in pre-5
game does not crash when upgrading from 1.12.2 to pre-4
1.13-pre5\: [^crash-2018-06-29_14.18.21-server.txt]
---- Minecraft Crash Report ----
// I just don't know what went wrong :(
Time: 29/06/18 2:18 PM
Description: Exception in server tick loop
java.lang.NullPointerException: Exception in server tick loop
at bta.<init>(SourceFile:13)
at btb.b(SourceFile:313)
at btb$$Lambda$1481/889562976.apply(Unknown Source)
at java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:193)
at java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:193)
at java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:193)
at java.util.Iterator.forEachRemaining(Iterator.java:116)
at java.util.Spliterators$IteratorSpliterator.forEachRemaining(Spliterators.java:1801)
at java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:512)
at java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:502)
at java.util.stream.ReduceOps$ReduceOp.evaluateSequential(ReduceOps.java:708)
at java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234)
at java.util.stream.ReferencePipeline.collect(ReferencePipeline.java:499)
at btb.a(SourceFile:314)
at bnd.n(SourceFile:81)
at sx.p(SourceFile:591)
at sx.<init>(SourceFile:129)
at dej.a(SourceFile:97)
at dej.d(SourceFile:132)
at net.minecraft.server.MinecraftServer.run(SourceFile:505)
at java.lang.Thread.run(Thread.java:745)
A detailed walkthrough of the error, its code path and all known details is as follows:
---------------------------------------------------------------------------------------
-- System Details --
Details:
Minecraft Version: 1.13-pre5
Operating System: Windows 7 (amd64) version 6.1
Java Version: 1.8.0_51, Oracle Corporation
Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
Memory: 1151100712 bytes (1097 MB) / 1603796992 bytes (1529 MB) up to 5726797824 bytes (5461 MB)
JVM Flags: 3 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xss1M -Xmx6G
Profiler Position: N/A (disabled)
Player Count: 0 / 8; []
Data Packs: vanilla
Type: Integrated Server (map_client.txt)
Is Modded: Probably not. Jar signature remains and both client + server brands are untouched.
Related issues
is duplicated by
Attachments
Comments


Confirmed for MC 1.13-pre5.
Crash description: Exception in server tick loop
.

Can confirm as well.
Confirmed. I attached the world with which this happened (It's a superflat world with modified Tunneler's Dream).

also crashes with 1.11 world in 1.13 pre 5
Game log:
22:22:41 | launcher | Preparing to launch minecraft client for 1.13-pre5 |
22:22:41 | launcher | Checking installations. |
22:22:41 | launcher | Minecraft client 1.13-pre5 is ready to start. |
22:22:41 | launcher | Starting! |
22:22:41 | launcher | Using default game log configuration client-1.12.xml (outputs XML) |
22:22:42 | cep | Setting user: Danny2222 |
22:22:43 | cep | LWJGL Version: 3.1.6 build 14 |
22:22:46 | vb | Reloading ResourceManager: Default, Sound Tweaks.zip, Clear Glass.zip, Screen effects.zip, My GUI.zip |
22:22:47 | det | Starting up SoundSystem... |
22:22:47 | det | Initializing No Sound |
22:22:47 | det | (Silent Mode) |
22:22:47 | det | OpenAL initialized. |
22:22:47 | det | Preloading sound minecraft:sounds/ambient/underwater/underwater_ambience.ogg |
22:22:47 | det | Sound engine started |
22:22:51 | dbo | Created: 1024x512 textures-atlas |
22:22:52 | com.mojang.text2speech.NarratorWindows | Narrator library for x64 successfully loaded |
22:23:04 | bv | Ambiguity between arguments [teleport, destination] and [teleport, targets] with inputs: [Player, 0123, @e, dd12be42-52a9-4a91-a8a1-11c01849e498] |
22:23:04 | bv | Ambiguity between arguments [teleport, location] and [teleport, destination] with inputs: [0.1 -0.5 .9, 0 0 0] |
22:23:04 | bv | Ambiguity between arguments [teleport, location] and [teleport, targets] with inputs: [0.1 -0.5 .9, 0 0 0] |
22:23:04 | bv | Ambiguity between arguments [teleport, targets] and [teleport, destination] with inputs: [Player, 0123, dd12be42-52a9-4a91-a8a1-11c01849e498] |
22:23:04 | bv | Ambiguity between arguments [teleport, targets, location] and [teleport, targets, destination] with inputs: [0.1 -0.5 .9, 0 0 0] |
22:23:04 | auq | Loaded 0 recipes |
22:23:04 | m | Loaded 0 advancements |
22:23:04 | dej | Starting integrated minecraft server version 1.13-pre5 |
22:23:04 | dej | Generating keypair |
22:23:04 | net.minecraft.server.MinecraftServer | Found new data pack vanilla, loading it automatically |
22:23:04 | vb | Reloading ResourceManager: Default |
22:23:05 | auq | Loaded 524 recipes |
22:23:06 | m | Loaded 571 advancements |
22:23:06 | net.minecraft.server.MinecraftServer | Encountered an unexpected exception java.lang.NullPointerException at bta.<init>(SourceFile:13) at btb.b(SourceFile:313) at btb$$Lambda$1481/1785436826.apply(Unknown Source) at java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:193) at java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:193) at java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:193) at java.util.Iterator.forEachRemaining(Iterator.java:116) at java.util.Spliterators$IteratorSpliterator.forEachRemaining(Spliterators.java:1801) at java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:512) at java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:502) at java.util.stream.ReduceOps$ReduceOp.evaluateSequential(ReduceOps.java:708) at java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.util.stream.ReferencePipeline.collect(ReferencePipeline.java:499) at btb.a(SourceFile:314) at bnd.n(SourceFile:81) at sx.p(SourceFile:591) at sx.<init>(SourceFile:129) at dej.a(SourceFile:97) at dej.d(SourceFile:132) at net.minecraft.server.MinecraftServer.run(SourceFile:505) at java.lang.Thread.run(Thread.java:745) |
22:23:06 | net.minecraft.server.MinecraftServer | This crash report has been saved to: D:\DATA TO BACKUP\GM\mc\Snapshots\crash-reports\crash-2018-06-30_22.23.06-server.txt |
22:23:06 | net.minecraft.server.MinecraftServer | Stopping server |
22:23:06 | net.minecraft.server.MinecraftServer | Saving players |
22:23:06 | net.minecraft.server.MinecraftServer | Saving worlds |
23:23:06 | game | ---- Minecraft Crash Report ---- // Oh - I know what I did wrong! Time: 30/06/18 22:23 Description: Exception in server tick loop java.lang.NullPointerException: Exception in server tick loop at bta.<init>(SourceFile:13) at btb.b(SourceFile:313) at btb$$Lambda$1481/1785436826.apply(Unknown Source) at java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:193) at java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:193) at java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:193) at java.util.Iterator.forEachRemaining(Iterator.java:116) at java.util.Spliterators$IteratorSpliterator.forEachRemaining(Spliterators.java:1801) at java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:512) at java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:502) at java.util.stream.ReduceOps$ReduceOp.evaluateSequential(ReduceOps.java:708) at java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.util.stream.ReferencePipeline.collect(ReferencePipeline.java:499) at btb.a(SourceFile:314) at bnd.n(SourceFile:81) at sx.p(SourceFile:591) at sx.<init>(SourceFile:129) at dej.a(SourceFile:97) at dej.d(SourceFile:132) at net.minecraft.server.MinecraftServer.run(SourceFile:505) at java.lang.Thread.run(Thread.java:745) A detailed walkthrough of the error, its code path and all known details is as follows: --------------------------------------------------------------------------------------- -- System Details -- Details: Minecraft Version: 1.13-pre5 Operating System: Windows 10 (amd64) version 10.0 Java Version: 1.8.0_51, Oracle Corporation Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation Memory: 1786116800 bytes (1703 MB) / 2191347712 bytes (2089 MB) up to 8375238656 bytes (7987 MB) JVM Flags: 7 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xss1M -Xmx8G -XX:+UseConcMarkSweepGC -XX:+CMSIncrementalMode -XX:-UseAdaptiveSizePolicy -Xmn2G Profiler Position: N/A (disabled) Player Count: 0 / 8; [] Data Packs: vanilla Type: Integrated Server (map_client.txt) Is Modded: Probably not. Jar signature remains and both client + server brands are untouched. #@ [media]Crash report saved to: #@ [media][CDATA[Stopping server]]></log4j:Message> </log4j:Event> |
23:23:06 | monitor | expected < |
22:23:06 | net.minecraft.server.MinecraftServer | Saving players |
22:23:06 | net.minecraft.server.MinecraftServer | Saving worlds |

You Have Did A Large Mistake. Updating world From Any Version Would crash the game

affects 1.13-pre6

Unfixed in pre6

Staff, reopen this issue, it's still present in MC 1.13-pre6 as the other members said.

This bug is not present in 1.13-pre6
I can open a 1.12.2 world in pre6.
I suggest you create a new bug report explaining your issue.
Closed again. If anyone wants this report to be reopened, please attach a crash report from the latest prerelease.

Attached a crash report from the latest pre-release 6

Was that world a 1.12.2 world then upgraded to 1.13? Or was it a snapshot world, then upgraded?

can a mod reopen this now that there's a crash report from the latest snapshot ?
Reopened. I'm not able to reproduce with my Tunneler test world anymore though.

1.13-pre7. Server still crashes trying to run my 1.12.2 world.

@unknown Are you sure this is still ? I upgrading a 1.12.2 world in 1.13 and it does work.
If you still have this issue, please create a new report and mention this ticket in the description so we can mark them as related.

@unknown, the comment of @unknown is about a month old.
What did you mean with your comment?

@unknown I was on vacation all the month of July and I did not really have an internet connection