world crashes game

15:01:28.612
Preparing spawn area: 0%
15:01:28.613
Preparing spawn area: 0%
15:01:28.613
Preparing spawn area: 0%
15:01:28.613
Preparing spawn area: 0%
15:01:28.613
Preparing spawn area: 0%
15:01:28.614
Preparing spawn area: 0%
15:01:28.614
Preparing spawn area: 0%
15:01:28.614
Preparing spawn area: 0%
15:01:29.389
Preparing spawn area: 0%
15:01:29.535
Preparing spawn area: 83%
15:01:30.176
Time elapsed: 5143 ms
15:01:30.553
Changing view distance to 255, from 10
15:01:31.718
BalaramChakra[local:E:88107e93] logged in with entity id 203 at (81.90515392133021, 74.78508308423835, 237.0706256367038)
15:01:31.781
BalaramChakra joined the game
15:01:34.240
Can't keep up! Is the server overloaded? Running 2777ms or 55 ticks behind
15:02:31.742
 
15:02:31.745
Process crashed with exit code 9

mine doesn't crash. I think its your computer

I think it is resolved now. Here is how,

First I deleted my launcher and re-install it. Usually this helps but the crash was even quicker and worse. Then, I eradicated my computer of any proof that I had minecraft (the application the folder and all that stuff), then i went to the minecraft website to re-install it. I can play minecraft again.

The Major downside is that all of my worlds are gone, and I have to do everything again. I had 40 worlds and a lot of survival and hardcore worlds that are permanently gone, as well as all of my mods, optifine, all of the texture and shaderpacks that I downloaded and all my game versions.

Happened again in 20w16a

Minecraft Game Output

 
Caught exception in thread Thread[Worker-8,5,main] java.lang.OutOfMemoryError: Java heap space at java.lang.Thread.getName(Thread.java:1135) at v$1.onTermination(SourceFile:98) at java.util.concurrent.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:162)
08:26:04.752
Encountered an unexpected exception java.lang.OutOfMemoryError: Java heap space at j.a(SourceFile:295) at net.minecraft.server.MinecraftServer.b(SourceFile:854) at net.minecraft.server.MinecraftServer.a(SourceFile:791) at emt.a(SourceFile:128) at net.minecraft.server.MinecraftServer.run(SourceFile:650) at java.lang.Thread.run(Thread.java:745)
08:26:07.426
This crash report has been saved to: /Users/balaramc/Library/Application Support/minecraft/crash-reports/crash-2020-04-16_08.26.07-server.txt

I would also like a different resolution. Obviously, I do not like to delete my worlds every other week.