17.09 02:01:49 [Server] INFO Caused by: com.google.gson.JsonParseException: Error loading registry data: Unknown element: ResourceKey[minecraft:worldgen/configured_feature / minecraft:mega_jungle_tree]; Unknown element: ResourceKey[minecraft:worldgen/configured_feature / minecraft:jungle_bush]; Unknown element: ResourceKey[minecraft:worldgen/configured_feature / minecraft:fancy_oak]; Unknown element: ResourceKey[minecraft:worldgen/configured_feature / minecraft:spruce]; Unknown element: ResourceKey[minecraft:worldgen/configured_feature / minecraft:pine]
17.09 02:01:49 [Server] INFO at net.minecraft.core.RegistryAccess.m_206152_(RegistryAccess.java:211) ~[server-1.19.2-20220805.130853-srg.jar%23137!/:?] {re:classloading,re:mixin}
17.09 02:01:49 [Server] INFO at java.util.Optional.ifPresent(Optional.java:178) ~[?:?] {re:mixin}
17.09 02:01:49 [Server] INFO at net.minecraft.core.RegistryAccess.m_206159_(RegistryAccess.java:210) ~[server-1.19.2-20220805.130853-srg.jar%23137!/:?] {re:classloading,re:mixin}
17.09 02:01:49 [Server] INFO at net.minecraft.core.RegistryAccess.m_206171_(RegistryAccess.java:203) ~[server-1.19.2-20220805.130853-srg.jar%23137!/:?] {re:classloading,re:mixin}
17.09 02:01:49 [Server] INFO at net.minecraft.resources.RegistryOps.m_206817_(RegistryOps.java:32) ~[server-1.19.2-20220805.130853-srg.jar%23137!/:?] {re:classloading,pl:accesstransformer:B}
17.09 02:01:49 [Server] INFO at net.minecraft.core.RegistryAccess.m_206197_(RegistryAccess.java:183) ~[server-1.19.2-20220805.130853-srg.jar%23137!/:?] {re:classloading,re:mixin}
17.09 02:01:49 [Server] INFO at net.minecraft.server.Main.lambda$main$2(Main.java:159) ~[server-1.19.2-20220805.130853-srg.jar%23137!/:?] {re:classloading}
17.09 02:01:49 [Server] INFO at net.minecraft.server.WorldLoader.m_214362_(WorldLoader.java:24) ~[server-1.19.2-20220805.130853-srg.jar%23137!/:?] {re:classloading}
17.09 02:01:49 [Server] INFO at net.minecraft.server.WorldStem.m_214415_(WorldStem.java:18) ~[server-1.19.2-20220805.130853-srg.jar%23137!/:?] {re:classloading}
17.09 02:01:49 [Server] INFO at net.minecraft.server.Main.lambda$main$3(Main.java:158) ~[server-1.19.2-20220805.130853-srg.jar%23137!/:?] {re:classloading}
17.09 02:01:49 [Server] INFO at net.minecraft.Util.m_214652_(Util.java:774) ~[server-1.19.2-20220805.130853-srg.jar%23137!/:?] {re:mixin,re:classloading,pl:mixin:APP:bettermineshafts.mixins.json:SuppressLogMixin,pl:mixin:A}
17.09 02:01:49 [Server] INFO at net.minecraft.Util.m_214679_(Util.java:769) ~[server-1.19.2-20220805.130853-srg.jar%23137!/:?] {re:mixin,re:classloading,pl:mixin:APP:bettermineshafts.mixins.json:SuppressLogMixin,pl:mixin:A}
17.09 02:01:49 [Server] INFO at net.minecraft.server.Main.main(Main.java:157) ~[server-1.19.2-20220805.130853-srg.jar%23137!/:?] {re:classloading}
17.09 02:01:49 [Server] INFO ... 13 more
17.09 02:01:50 [Multicraft] Server shut down (starting)
17.09 02:01:50 [Multicraft] Restarting crashed server in 10 seconds
17.09 02:01:50 [Multicraft] Server stopped
17.09 02:01:58 [Multicraft] Received stop command
17.09 02:01:58 [Multicraft] Server stopped

your issue is unrelated; there is a version mismatch between the client and the server, the server is outdated.

indeed, but it crashes either way. I deleted and installed the latest version for the mod. crashed at join. going back to the version before fixed the issue

your issue was still valid; albiet caused by a seperate bug. both issues will be fixed in 1.20.1 which should be out later today or tomorrow.

similar thing when I try to join my server as client : the game crashes.
1.19.2, latest mod version, latest forge version :

java.lang.ExceptionInInitializerError at TRANSFORMER/[email protected]/com.github.alexthe666.alexsmobs.client.event.ClientEvents.onRenderWorldLastEvent(ClientEvents.java:358) at TRANSFORMER/[email protected]/com.github.alexthe666.alexsmobs.client.event.__ClientEvents_onRenderWorldLastEvent_RenderLevelLastEvent.invoke(.dynamic) at MC-BOOTSTRAP/net.minecraftforge.eventbus/net.minecraftforge.eventbus.ASMEventHandler.invoke(ASMEventHandler.java:73) at MC-BOOTSTRAP/net.minecraftforge.eventbus/net.minecraftforge.eventbus.EventBus.post(EventBus.java:315) at MC-BOOTSTRAP/net.minecraftforge.eventbus/net.minecraftforge.eventbus.EventBus.post(EventBus.java:296) at TRANSFORMER/[email protected]/net.minecraftforge.client.ForgeHooksClient.dispatchRenderLast(ForgeHooksClient.java:272) at TRANSFORMER/[email protected]/net.minecraft.client.renderer.GameRenderer.m_109089_(GameRenderer.java:1070) at TRANSFORMER/[email protected]/net.minecraft.client.renderer.GameRenderer.m_109093_(GameRenderer.java:840) at TRANSFORMER/[email protected]/net.minecraft.client.Minecraft.m_91383_(Minecraft.java:1115) at TRANSFORMER/[email protected]/net.minecraft.client.Minecraft.m_91374_(Minecraft.java:700) at TRANSFORMER/[email protected]/net.minecraft.client.main.Main.m_239872_(Main.java:212) at TRANSFORMER/[email protected]/net.minecraft.client.main.Main.main(Main.java:51) at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) at java.base/java.lang.reflect.Method.invoke(Unknown Source) at MC-BOOTSTRAP/[email protected]/net.minecraftforge.fml.loading.targets.CommonClientLaunchHandler.lambda$launchService$0(CommonClientLaunchHandler.java:27) at MC-BOOTSTRAP/[email protected]/cpw.mods.modlauncher.LaunchServiceHandlerDecorator.launch(LaunchServiceHandlerDecorator.java:30) at MC-BOOTSTRAP/[email protected]/cpw.mods.modlauncher.LaunchServiceHandler.launch(LaunchServiceHandler.java:53) at MC-BOOTSTRAP/[email protected]/cpw.mods.modlauncher.LaunchServiceHandler.launch(LaunchServiceHandler.java:71) at MC-BOOTSTRAP/[email protected]/cpw.mods.modlauncher.Launcher.run(Launcher.java:106) at MC-BOOTSTRAP/[email protected]/cpw.mods.modlauncher.Launcher.main(Launcher.java:77) at MC-BOOTSTRAP/[email protected]/cpw.mods.modlauncher.BootstrapLaunchConsumer.accept(BootstrapLaunchConsumer.java:26) at MC-BOOTSTRAP/[email protected]/cpw.mods.modlauncher.BootstrapLaunchConsumer.accept(BootstrapLaunchConsumer.java:23) at [email protected]/cpw.mods.bootstraplauncher.BootstrapLauncher.main(BootstrapLauncher.java:141) Caused by: java.lang.NullPointerException: Registry Object not present: alexsmobs:farseer at java.base/java.util.Objects.requireNonNull(Unknown Source) at TRANSFORMER/[email protected]/net.minecraftforge.registries.RegistryObject.get(RegistryObject.java:204) at TRANSFORMER/[email protected]/com.github.alexthe666.alexsmobs.client.render.AMItemstackRenderer.lambda$static$0(AMItemstackRenderer.java:122) at TRANSFORMER/[email protected]/net.minecraft.Util.m_137469_(Util.java:368) at TRANSFORMER/[email protected]/com.github.alexthe666.alexsmobs.client.render.AMItemstackRenderer.<clinit>(AMItemstackRenderer.java:41) ... 25 more [15:02:59] [Render thread/ERROR]: Unreported exception thrown! java.lang.ExceptionInInitializerError: null at com.github.alexthe666.alexsmobs.client.event.ClientEvents.onRenderWorldLastEvent(ClientEvents.java:358) ~[alexsmobs-1.12.0.jar%23158!/:1.12.0] at com.github.alexthe666.alexsmobs.client.event.__ClientEvents_onRenderWorldLastEvent_RenderLevelLastEvent.invoke(.dynamic) ~[alexsmobs-1.12.0.jar%23158!/:1.12.0] at net.minecraftforge.eventbus.ASMEventHandler.invoke(ASMEventHandler.java:73) ~[eventbus-6.0.3.jar%2379!/:?] at net.minecraftforge.eventbus.EventBus.post(EventBus.java:315) ~[eventbus-6.0.3.jar%2379!/:?] at net.minecraftforge.eventbus.EventBus.post(EventBus.java:296) ~[eventbus-6.0.3.jar%2379!/:?] at net.minecraftforge.client.ForgeHooksClient.dispatchRenderLast(ForgeHooksClient.java:272) ~[forge-1.19.2-43.1.25-universal.jar%23486!/:?] at net.minecraft.client.renderer.GameRenderer.m_109089_(GameRenderer.java:1070) ~[client-1.19.2-20220805.130853-srg.jar%23481!/:?] at net.minecraft.client.renderer.GameRenderer.m_109093_(GameRenderer.java:840) ~[client-1.19.2-20220805.130853-srg.jar%23481!/:?] at net.minecraft.client.Minecraft.m_91383_(Minecraft.java:1115) ~[client-1.19.2-20220805.130853-srg.jar%23481!/:?] at net.minecraft.client.Minecraft.m_91374_(Minecraft.java:700) ~[client-1.19.2-20220805.130853-srg.jar%23481!/:?] at net.minecraft.client.main.Main.m_239872_(Main.java:212) ~[client-1.19.2-20220805.130853-srg.jar%23481!/:?] at net.minecraft.client.main.Main.main(Main.java:51) ~[client-1.19.2-20220805.130853-srg.jar%23481!/:?] at jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:?] at jdk.internal.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) ~[?:?] at jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) ~[?:?] at java.lang.reflect.Method.invoke(Unknown Source) ~[?:?] at net.minecraftforge.fml.loading.targets.CommonClientLaunchHandler.lambda$launchService$0(CommonClientLaunchHandler.java:27) ~[fmlloader-1.19.2-43.1.25.jar%2395!/:?] at cpw.mods.modlauncher.LaunchServiceHandlerDecorator.launch(LaunchServiceHandlerDecorator.java:30) [modlauncher-10.0.8.jar%2382!/:?] at cpw.mods.modlauncher.LaunchServiceHandler.launch(LaunchServiceHandler.java:53) [modlauncher-10.0.8.jar%2382!/:?] at cpw.mods.modlauncher.LaunchServiceHandler.launch(LaunchServiceHandler.java:71) [modlauncher-10.0.8.jar%2382!/:?] at cpw.mods.modlauncher.Launcher.run(Launcher.java:106) [modlauncher-10.0.8.jar%2382!/:?] at cpw.mods.modlauncher.Launcher.main(Launcher.java:77) [modlauncher-10.0.8.jar%2382!/:?] at cpw.mods.modlauncher.BootstrapLaunchConsumer.accept(BootstrapLaunchConsumer.java:26) [modlauncher-10.0.8.jar%2382!/:?] at cpw.mods.modlauncher.BootstrapLaunchConsumer.accept(BootstrapLaunchConsumer.java:23) [modlauncher-10.0.8.jar%2382!/:?] at cpw.mods.bootstraplauncher.BootstrapLauncher.main(BootstrapLauncher.java:141) [bootstraplauncher-1.1.2.jar:?] Caused by: java.lang.NullPointerException: Registry Object not present: alexsmobs:farseer at java.util.Objects.requireNonNull(Unknown Source) ~[?:?] at net.minecraftforge.registries.RegistryObject.get(RegistryObject.java:204) ~[forge-1.19.2-43.1.25-universal.jar%23486!/:?] at com.github.alexthe666.alexsmobs.client.render.AMItemstackRenderer.lambda$static$0(AMItemstackRenderer.java:122) ~[alexsmobs-1.12.0.jar%23158!/:1.12.0] at net.minecraft.Util.m_137469_(Util.java:368) ~[client-1.19.2-20220805.130853-srg.jar%23481!/:?] at com.github.alexthe666.alexsmobs.client.render.AMItemstackRenderer.<clinit>(AMItemstackRenderer.java:41) ~[alexsmobs-1.12.0.jar%23158!/:1.12.0] ... 25 more [15:03:00] [Render thread/INFO]: JEI StartEventObserver received class net.minecraftforge.client.event.ClientPlayerNetworkEvent$LoggingOut [15:03:00] [Render thread/INFO]: JEI StartEventObserver transitioning state from ENABLED to DISABLED [15:03:00] [Render thread/INFO]: Clearing audio channels [15:03:00] [Render thread/INFO]: Clearing unused audio channels [15:03:00] [Render thread/FATAL]: Preparing crash report with UUID cfbcad2e-e421-4fc0-82a1-7541bb3e7e8e [15:03:00] [Render thread/FATAL]: Preparing crash report with UUID e8212cdf-0d53-4312-90ea-1100c8dd8ffc

server starts fine in my case. simply can't join the world. I thought the issue was related but I can open an issue if needed...

your issue is unrelated; there is a version mismatch between the client and the server, the server is outdated.

your issue is unrelated; there is a version mismatch between the client and the server, the server is outdated.

indeed, but it crashes either way. I deleted and installed the latest version for the mod. crashed at join. going back to the version before fixed the issue