Fresh download isn't working (Newly downloaded)

[Luminator97]

Describe the bug I'm not really sure, I just downloaded this fresh off the internet. Set it up, got everything ready, joined the localhost and it seemed fine in-game, but then after a few seconds I would get kicked. I checked the World Downloader and it gave me that output below.

Log output

java.lang.ArrayIndexOutOfBoundsException: Index 20331 out of bounds for length 20331
	at packets.DataTypeProvider.readNext(DataTypeProvider.java:76)
	at packets.DataTypeProvider$1.read(DataTypeProvider.java:198)
	at java.base/java.io.InputStream.read(InputStream.java:296)
	at java.base/java.io.DataInputStream.readFully(DataInputStream.java:208)
	at java.base/java.io.DataInputStream.readUTF(DataInputStream.java:594)
	at java.base/java.io.DataInputStream.readUTF(DataInputStream.java:550)
	at se.llbit.nbt.StringTag.read(StringTag.java:46)
	at se.llbit.nbt.NamedTag.read(NamedTag.java:58)
	at packets.DataTypeProvider.readNbtTag(DataTypeProvider.java:195)
	at packets.handler.version.ClientBoundGamePacketHandler_1_18.lambda$new$1(ClientBoundGamePacketHandler_1_18.java:32)
	at packets.handler.PacketHandler.handle(PacketHandler.java:57)
	at packets.DataReader.readPackets(DataReader.java:163)
	at packets.DataReader.pushData(DataReader.java:118)
	at proxy.ProxyServer.lambda$run$7(ProxyServer.java:106)
	at util.ExceptionHandling.attempt(ExceptionHandling.java:12)
	at proxy.ProxyServer.lambda$run$9(ProxyServer.java:103)
	at util.ExceptionHandling.attempt(ExceptionHandling.java:12)
	at proxy.ProxyServer.run(ProxyServer.java:62)

 java.lang.RuntimeException: Invalid VarInt found! Packet structure may have changed.
	at packets.DataReader.readVarInt(DataReader.java:70)
	at packets.DataTypeProvider.readVarInt(DataTypeProvider.java:111)
	at game.data.entity.EntityRegistry.destroyEntities(EntityRegistry.java:187)
	at packets.handler.ClientBoundGamePacketHandler.lambda$new$5(ClientBoundGamePacketHandler.java:60)
	at packets.handler.PacketHandler.handle(PacketHandler.java:57)
	at packets.DataReader.readPackets(DataReader.java:163)
	at packets.DataReader.pushData(DataReader.java:118)
	at proxy.ProxyServer.lambda$run$7(ProxyServer.java:106)
	at util.ExceptionHandling.attempt(ExceptionHandling.java:12)
	at proxy.ProxyServer.lambda$run$9(ProxyServer.java:103)
	at util.ExceptionHandling.attempt(ExceptionHandling.java:12)
	at proxy.ProxyServer.run(ProxyServer.java:62)

 java.lang.ArrayIndexOutOfBoundsException: arraycopy: last source index 17 out of bounds for byte[10]
	at java.base/java.lang.System.arraycopy(Native Method)
	at packets.DataTypeProvider.readByteArray(DataTypeProvider.java:90)
	at packets.DataTypeProvider.readDouble(DataTypeProvider.java:216)
	at packets.handler.ServerBoundGamePacketHandler.lambda$new$0(ServerBoundGamePacketHandler.java:20)
	at packets.handler.PacketHandler.handle(PacketHandler.java:57)
	at packets.DataReader.readPackets(DataReader.java:163)
	at packets.DataReader.pushData(DataReader.java:118)
	at proxy.ProxyServer.lambda$run$4(ProxyServer.java:86)
	at util.ExceptionHandling.attempt(ExceptionHandling.java:12)
	at proxy.ProxyServer.lambda$run$6(ProxyServer.java:83)
	at java.base/java.lang.Thread.run(Thread.java:1583)

 java.lang.ArrayIndexOutOfBoundsException: arraycopy: last source index 17 out of bounds for byte[10]
	at java.base/java.lang.System.arraycopy(Native Method)
	at packets.DataTypeProvider.readByteArray(DataTypeProvider.java:90)
	at packets.DataTypeProvider.readDouble(DataTypeProvider.java:216)
	at packets.handler.ServerBoundGamePacketHandler.lambda$new$0(ServerBoundGamePacketHandler.java:20)
	at packets.handler.PacketHandler.handle(PacketHandler.java:57)
	at packets.DataReader.readPackets(DataReader.java:163)
	at packets.DataReader.pushData(DataReader.java:118)
	at proxy.ProxyServer.lambda$run$4(ProxyServer.java:86)

 java.lang.ArrayIndexOutOfBoundsException: arraycopy: last source index 17 out of bounds for byte[10]
	at java.base/java.lang.System.arraycopy(Native Method)
	at packets.DataTypeProvider.readByteArray(DataTypeProvider.java:90)
	at packets.DataTypeProvider.readDouble(DataTypeProvider.java:216)
	at packets.handler.ServerBoundGamePacketHandler.lambda$new$0(ServerBoundGamePacketHandler.java:20)

 java.lang.ArrayIndexOutOfBoundsException: arraycopy: last source index 17 out of bounds for byte[10]
	at java.base/java.lang.System.arraycopy(Native Method)
	at packets.DataTypeProvider.readByteArray(DataTypeProvider.java:90)
	at packets.DataTypeProvider.readDouble(DataTypeProvider.java:216)

 java.lang.ArrayIndexOutOfBoundsException: arraycopy: last source index 17 out of bounds for byte[10]
	at java.base/java.lang.System.arraycopy(Native Method)
	at packets.DataTypeProvider.readByteArray(DataTypeProvider.java:90)
	at packets.DataTypeProvider.readDouble(DataTypeProvider.java:216)
	at packets.handler.ServerBoundGamePacketHandler.lambda$new$0(ServerBoundGamePacketHandler.java:20)
	at packets.handler.PacketHandler.handle(PacketHandler.java:57)
	at packets.DataReader.readPackets(DataReader.java:163)
	at packets.DataReader.pushData(DataReader.java:118)
	at proxy.ProxyServer.lambda$run$4(ProxyServer.java:86)
	at util.ExceptionHandling.attempt(ExceptionHandling.java:12)
	at proxy.ProxyServer.lambda$run$6(ProxyServer.java:83)
	at java.base/java.lang.Thread.run(Thread.java:1583)

 java.lang.ArrayIndexOutOfBoundsException: arraycopy: last source index 17 out of bounds for byte[10]
	at java.base/java.lang.System.arraycopy(Native Method)
	at packets.DataTypeProvider.readByteArray(DataTypeProvider.java:90)
	at packets.DataTypeProvider.readDouble(DataTypeProvider.java:216)
	at packets.handler.ServerBoundGamePacketHandler.lambda$new$0(ServerBoundGamePacketHandler.java:20)
	at packets.handler.PacketHandler.handle(PacketHandler.java:57)
	at packets.DataReader.readPackets(DataReader.java:163)
	at packets.DataReader.pushData(DataReader.java:118)
	at proxy.ProxyServer.lambda$run$4(ProxyServer.java:86)
	at util.ExceptionHandling.attempt(ExceptionHandling.java:12)
	at proxy.ProxyServer.lambda$run$6(ProxyServer.java:83)
	at java.base/java.lang.Thread.run(Thread.java:1583)

 java.lang.ArrayIndexOutOfBoundsException: arraycopy: last source index 17 out of bounds for byte[10]
	at java.base/java.lang.System.arraycopy(Native Method)
	at packets.DataTypeProvider.readByteArray(DataTypeProvider.java:90)
	at packets.DataTypeProvider.readDouble(DataTypeProvider.java:216)
	at packets.handler.ServerBoundGamePacketHandler.lambda$new$0(ServerBoundGamePacketHandler.java:20)
	at packets.handler.PacketHandler.handle(PacketHandler.java:57)
	at packets.DataReader.readPackets(DataReader.java:163)
	at packets.DataReader.pushData(DataReader.java:118)
	at proxy.ProxyServer.lambda$run$4(ProxyServer.java:86)
	at util.ExceptionHandling.attempt(ExceptionHandling.java:12)
	at proxy.ProxyServer.lambda$run$6(ProxyServer.java:83)
	at java.base/java.lang.Thread.run(Thread.java:1583)

 java.lang.ArrayIndexOutOfBoundsException: arraycopy: last source index 17 out of bounds for byte[10]
	at java.base/java.lang.System.arraycopy(Native Method)
	at packets.DataTypeProvider.readByteArray(DataTypeProvider.java:90)
	at packets.DataTypeProvider.readDouble(DataTypeProvider.java:216)
	at packets.handler.ServerBoundGamePacketHandler.lambda$new$0(ServerBoundGamePacketHandler.java:20)
	at packets.handler.PacketHandler.handle(PacketHandler.java:57)
	at packets.DataReader.readPackets(DataReader.java:163)     
...

Screenshots

Version

• Game: Minecraft 1.20.2
• Downloader: latest

[PSJahn]

Same issue here