When joining specific servers such as hypixel using multiconnect-1.3.11, The joining world text stays in place with no progression whilst latest.log reporting an register issue for ocean biome or related. (Sample: java.lang.RuntimeException: Attempted to register ID ResourceKey[minecraft:worldgen/biome / minecraft:ocean] at different raw IDs (0, 174)! If you're trying to override an item, use .set(), not .register()! )

• This includes causing the log file to endlessly grow until the user presses cancel during an connection attempt.

Multiconnect doesn't translate connections to hypixel.net. Please verify this doesn't happen on vanilla clients.

^ I have tried to reproduce this issue on a vanilla client and hypixel accepts the connection just fine without any further problems occurring there.

I just joined hypixel with multiconnect and I cannot reproduce the problem. Can you send me your log file?

[main/INFO]: Connecting to mc.hypixel.net, 25565
[Server Connector #1/INFO]: Hypixel detected, protocol version forced to 751 (1.16.2)
[main/WARN]: Received invalid identifier in minecraft:register: BungeeCord (Non [a-z0-9/.-] character in path of location: minecraft:BungeeCord)
[main/FATAL]: Error executing task on Client
java.lang.RuntimeException: Attempted to register ID ResourceKey[minecraft:worldgen/biome / minecraft:ocean] at different raw IDs (0, 174)! If you're trying to override an item, use .set(), not .register()!
at net.minecraft.class_2370.handler$zjg000$setPre(class_2370.java:1155) ~[intermediary-MCWine-SNAPSHOT.jar:?]
at net.minecraft.class_2370.method_10273(class_2370.java) ~[intermediary-MCWine-SNAPSHOT.jar:?]
at net.minecraft.class_2370.register(class_2370.java:608) ~[intermediary-MCWine-SNAPSHOT.jar:?]
at net.minecraft.class_634.mda762c7$lambda$addMissingValues$0$4(class_634.java:2498) ~[intermediary-MCWine-SNAPSHOT.jar:?]
at java.util.Optional.ifPresent(Optional.java:176) ~[?:?]
at net.minecraft.class_634.addMissingValues(class_634.java:2498) ~[intermediary-MCWine-SNAPSHOT.jar:?]
at net.minecraft.class_634.handler$zhk002$onOnGameJoin(class_634.java:2477) ~[intermediary-MCWine-SNAPSHOT.jar:?]
at net.minecraft.class_634.method_11120(class_634.java:359) ~[intermediary-MCWine-SNAPSHOT.jar:?]
at net.minecraft.class_2678.method_11567(class_2678.java:110) ~[intermediary-MCWine-SNAPSHOT.jar:?]
at net.minecraft.class_2678.method_11054(class_2678.java:18) ~[intermediary-MCWine-SNAPSHOT.jar:?]
at net.minecraft.class_2600.method_11072(class_2600.java:21) ~[intermediary-MCWine-SNAPSHOT.jar:?]
at net.minecraft.class_1255.method_18859(class_1255.java:144) [intermediary-MCWine-SNAPSHOT.jar:?]
at net.minecraft.class_4093.method_18859(class_4093.java:23) [intermediary-MCWine-SNAPSHOT.jar:?]
at net.minecraft.class_1255.method_16075(class_1255.java:118) [intermediary-MCWine-SNAPSHOT.jar:?]
at net.minecraft.class_1255.method_5383(class_1255.java:103) [intermediary-MCWine-SNAPSHOT.jar:?]
at net.minecraft.class_310.method_1523(class_310.java:990) [intermediary-MCWine-SNAPSHOT.jar:?]
at net.minecraft.class_310.method_1514(class_310.java:656) [intermediary-MCWine-SNAPSHOT.jar:?]
at net.minecraft.client.main.Main.main(Main.java:215) [intermediary-MCWine-SNAPSHOT.jar:?]
at jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:?]
at jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:?]
at jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:?]
at java.lang.reflect.Method.invoke(Method.java:564) ~[?:?]
at net.fabricmc.loader.game.MinecraftGameProvider.launch(MinecraftGameProvider.java:192) [fabric-loader-0.9.1+build.205.jar:?]
at net.fabricmc.loader.launch.knot.Knot.init(Knot.java:140) [fabric-loader-0.9.1+build.205.jar:?]
at net.fabricmc.loader.launch.knot.KnotClient.main(KnotClient.java:26) [fabric-loader-0.9.1+build.205.jar:?]
[main/FATAL]: Error executing task on Client
java.lang.NullPointerException: null
at net.minecraft.class_634.method_11152(class_634.java:1819) ~[intermediary-MCWine-SNAPSHOT.jar:?]
at net.minecraft.class_2658.method_11457(class_2658.java:65) ~[intermediary-MCWine-SNAPSHOT.jar:?]
at net.minecraft.class_2658.method_11054(class_2658.java:10) ~[intermediary-MCWine-SNAPSHOT.jar:?]
at net.minecraft.class_2600.method_11072(class_2600.java:21) ~[intermediary-MCWine-SNAPSHOT.jar:?]
at net.minecraft.class_1255.method_18859(class_1255.java:144) [intermediary-MCWine-SNAPSHOT.jar:?]
at net.minecraft.class_4093.method_18859(class_4093.java:23) [intermediary-MCWine-SNAPSHOT.jar:?]
at net.minecraft.class_1255.method_16075(class_1255.java:118) [intermediary-MCWine-SNAPSHOT.jar:?]
at net.minecraft.class_1255.method_5383(class_1255.java:103) [intermediary-MCWine-SNAPSHOT.jar:?]
at net.minecraft.class_310.method_1523(class_310.java:990) [intermediary-MCWine-SNAPSHOT.jar:?]
at net.minecraft.class_310.method_1514(class_310.java:656) [intermediary-MCWine-SNAPSHOT.jar:?]
at net.minecraft.client.main.Main.main(Main.java:215) [intermediary-MCWine-SNAPSHOT.jar:?]
at jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:?]
at jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:?]
at jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:?]
at java.lang.reflect.Method.invoke(Method.java:564) ~[?:?]
at net.fabricmc.loader.game.MinecraftGameProvider.launch(MinecraftGameProvider.java:192) [fabric-loader-0.9.1+build.205.jar:?]
at net.fabricmc.loader.launch.knot.Knot.init(Knot.java:140) [fabric-loader-0.9.1+build.205.jar:?]
at net.fabricmc.loader.launch.knot.KnotClient.main(KnotClient.java:26) [fabric-loader-0.9.1+build.205.jar:?]
[main/WARN]: Received invalid identifier in minecraft:register: HYP|McVersion (Non [a-z0-9/.-] character in path of location: minecraft:HYP|McVersion)

The rest of the log file repeats the same null errors over and over again.

Can you please attach the full log file by uploading to a site such as pastebin? I am interested in more than just the error message.

https://pastebin.com/raw/kDzgH2aB - Full log is here.

I have managed to reproduce this but only with fabric API installed. I am looking into this further to see which mod is at fault.

The conditions under which it happens is on all servers where the protocol is the current version (1.16.2) when you have multiconnect and fabric API installed.

How did my dumb shit code even work without fabric API....

I assume your mod has worked without fabric api because of some compatibility support or a related configuration.

https://github.com/Earthcomputer/multiconnect/releases/tag/v1.3.12

Thanks for patching this issue. 😊