Created a world in 18w48a and now it will not reload, tried 2 times.
Minecraft Crash Report ----
// Don't be sad, have a hug! <3
Time: 11/29/18 6:45 PM
Description: Exception in server tick loop
java.util.concurrent.CompletionException: java.lang.AbstractMethodError: bxx$$Lambda$1068/1422562336.a(Lcom/mojang/datafixers/Dynamic;)Ljava/lang/Object;
at java.util.concurrent.CompletableFuture.encodeThrowable(CompletableFuture.java:273)
at java.util.concurrent.CompletableFuture.completeThrowable(CompletableFuture.java:280)
at java.util.concurrent.CompletableFuture$AsyncSupply.run(CompletableFuture.java:1584)
at ui$$Lambda$2049/834403954.accept(Unknown Source)
at java.util.ArrayList.forEach(ArrayList.java:1249)
at ui.e(SourceFile:369)
at net.minecraft.server.MinecraftServer.q(SourceFile:641)
at net.minecraft.server.MinecraftServer.p(SourceFile:625)
at net.minecraft.server.MinecraftServer.a(SourceFile:422)
at dog.a(SourceFile:91)
at dog.d(SourceFile:107)
at net.minecraft.server.MinecraftServer.run(SourceFile:562)
at java.lang.Thread.run(Thread.java:745)
Caused by: java.lang.AbstractMethodError: bxx$$Lambda$1068/1422562336.a(Lcom/mojang/datafixers/Dynamic;)Ljava/lang/Object;
at yg.a(SourceFile:18)
at cat.<init>(SourceFile:44)
at bvl$a.<init>(SourceFile:29)
at bxc$$Lambda$1006/1600591903.load(Unknown Source)
at cax.a(SourceFile:86)
at bqu.a(SourceFile:614)
at bqu.a(SourceFile:229)
at ui.d(SourceFile:439)
at ui$$Lambda$2032/370628119.get(Unknown Source)
at java.util.concurrent.CompletableFuture$AsyncSupply.run(CompletableFuture.java:1582)
... 10 more
A detailed walkthrough of the error, its code path and all known details is as follows:
---------------------------------------------------------------------------------------
Environment
Intel Core I-5m 3rd generation
Intel 4000 HD graphics
8GB Ram
Windows 10
Java Version 8 update 191
For clarification, no /locate was used in this world, I spawned next to a new plains village with another new plains village a short distance away and played in that world in creative mode for nearly an hour with no issue, and saved with no issue. Upon reloading the world it gives the crash noted above. It is still not resolved, at least on my end.