Working code

buildSrc/src/main/groovy/multiloader-common.gradle

@@ -98,8 +98,6 @@ processResources {
             'description'                  : project.description,
             'neoforge_version'             : neoforge_version,
             'neoforge_loader_version_range': neoforge_loader_version_range,
-            "forge_version": forge_version,
-            "forge_loader_version_range": forge_loader_version_range,
             'credits'                      : credits,
             'java_version'                 : java_version
     ]

common/src/main/java/com/lukasabbe/bookshelfinspector/util/RomanNumerals.java

@@ -2,6 +2,7 @@ package com.lukasabbe.bookshelfinspector.util;
 
 import java.util.TreeMap;
 
+//https://stackoverflow.com/questions/12967896/converting-integers-to-roman-numerals-java
 public class RomanNumerals {
     private final static TreeMap<Integer, String> map = new TreeMap<>();
     static {

fabric/src/main/java/com/lukasabbe/bookshelfinspector/BookshelfInspectorFabric.java

@@ -4,9 +4,6 @@ import com.lukasabbe.bookshelfinspector.network.packets.BookShelfInventoryPayloa
 import com.lukasabbe.bookshelfinspector.network.packets.BookShelfInventoryRequestPayload;
 import com.lukasabbe.bookshelfinspector.network.packets.LecternInventoryRequestPayload;
 import com.lukasabbe.bookshelfinspector.network.packets.ModCheckPayload;
-import com.lukasabbe.bookshelfinspector.network.server.BookShelfInventoryRequestServerPayloadHandler;
-import com.lukasabbe.bookshelfinspector.network.server.LecternInventoryRequestServerPayloadHandler;
-import com.lukasabbe.bookshelfinspector.platform.Services;
 import net.fabricmc.api.ModInitializer;
 import net.fabricmc.fabric.api.networking.v1.PayloadTypeRegistry;
 import net.fabricmc.fabric.api.networking.v1.ServerPlayNetworking;

gradle.properties

@@ -1,8 +1,4 @@
-# Important Notes:
+version=2.0+1.21.5
-# Every field you add must be added to buildSrc/src/main/groovy/multiloader-common.gradle expandProps map.
-
-# Project
-version=1.0+1.21.5
 group=com.lukasabbe.bookshelfinspector
 java_version=21
 
@@ -15,8 +11,7 @@ license=MIT
 credits=
 description=Inspect any book in a chiseled bookshelf.
 minecraft_version_range=[1.21.5, 1.22)
-## This is the version of minecraft that the 'common' project uses, you can find a list of all versions here
+
-## https://projects.neoforged.net/neoforged/neoform
 neo_form_version=1.21.5-20250325.162830
 # The version of ParchmentMC that is used, see https://parchmentmc.org/docs/getting-started#choose-a-version for new versions
 parchment_minecraft=1.21.4
@@ -26,10 +21,6 @@ parchment_version=2025.03.23
 fabric_version=0.119.5+1.21.5
 fabric_loader_version=0.16.10
 
-# Forge
-forge_version=55.0.1
-forge_loader_version_range=[55,)
-
 # NeoForge
 neoforge_version=21.5.4-beta
 neoforge_loader_version_range=[4,)

neoforge/src/main/java/com/lukasabbe/bookshelfinspector/NetworkHandler.java

@@ -7,6 +7,7 @@ import com.lukasabbe.bookshelfinspector.network.packets.ModCheckPayload;
 import net.minecraft.client.player.LocalPlayer;
 import net.minecraft.server.level.ServerPlayer;
 import net.neoforged.bus.api.SubscribeEvent;
+import net.neoforged.neoforge.network.event.RegisterConfigurationTasksEvent;
 import net.neoforged.neoforge.network.event.RegisterPayloadHandlersEvent;
 import net.neoforged.neoforge.network.registration.PayloadRegistrar;
 
@@ -14,7 +15,7 @@ public class NetworkHandler {
 
     @SubscribeEvent
     public static void registerPayloads(final RegisterPayloadHandlersEvent event){
-        final PayloadRegistrar registrar = event.registrar("1");
+        final PayloadRegistrar registrar = event.registrar("bookshelfinspector").optional();
         registrar.playToClient(
                 BookShelfInventoryPayload.ID,
                 BookShelfInventoryPayload.CODEC,

neoforge/src/main/java/com/lukasabbe/bookshelfinspector/platform/NeoForgeNetworkHelper.java

@@ -8,7 +8,9 @@ import net.neoforged.neoforge.network.PacketDistributor;
 public class NeoForgeNetworkHelper implements INetworkHelper {
     @Override
     public void sendPacketFromServer(ServerPlayer player, CustomPacketPayload payload) {
+        try{
             PacketDistributor.sendToPlayer(player, payload);
+        }catch (Exception ignored) {}
     }
 
     @Override

neoforge/src/main/resources/META-INF/neoforge.mods.toml

@@ -1,35 +1,13 @@
 modLoader = "javafml" #mandatory
 loaderVersion = "*" #mandatory
 license = "${license}" # Review your options at https://choosealicense.com/.
-#issueTrackerURL="https://change.me.to.your.issue.tracker.example.invalid/" #optional
 [[mods]] #mandatory
 modId = "${mod_id}" #mandatory
 version = "${version}" #mandatory
 displayName = "${mod_name}" #mandatory
-#updateJSONURL="https://change.me.example.invalid/updates.json" #optional (see https://docs.neoforged.net/docs/misc/updatechecker/)
-#displayURL="https://change.me.to.your.mods.homepage.example.invalid/" #optional (displayed in the mod UI)
 logoFile="${mod_id}.png" #optional
 credits="${credits}" #optional
 authors = "${mod_author}" #optional
 description = '''${description}''' #mandatory (Supports multiline text)
-displayTest = "NONE"
 [[mixins]]
 config = "${mod_id}.mixins.json"
-[[dependencies.${mod_id}]] #optional
-modId = "neoforge" #mandatory
-type="required" #mandatory (Can be one of "required", "optional", "incompatible" or "discouraged")
-versionRange = "[${neoforge_version},)" #mandatory
-ordering = "NONE" # The order that this dependency should load in relation to your mod, required to be either 'BEFORE' or 'AFTER' if the dependency is not mandatory
-side = "BOTH" # Side this dependency is applied on - 'BOTH', 'CLIENT' or 'SERVER'
-[[dependencies.${mod_id}]]
-modId = "minecraft"
-type="required" #mandatory (Can be one of "required", "optional", "incompatible" or "discouraged")
-versionRange = "${minecraft_version_range}"
-ordering = "NONE"
-side = "BOTH"
-
-# Features are specific properties of the game environment, that you may want to declare you require. This example declares
-# that your mod requires GL version 3.2 or higher. Other features will be added. They are side aware so declaring this won't
-# stop your mod loading on the server for example.
-#[features.${mod_id}]
-#openGLVersion="[3.2,)"