[1.14.4] Issue loading items/recipes on server

Hello everyone! I am working on my first mod, a minimalistic thing that adds a trash bin custom block (The block, the custom gui for the block, recipe, a loot table, block item) to the game.

Everything is working in single player, but when I add it to the mods folder of my forge server, I get log messages that loading the recipes and loot tables fails because it doesn't find the items I'm referencing in them. I realise I am likely doing something wrong with where I'm registering the items, like reaching across the sides or something, but I can't figure out exactly what I should be doing differently.

The full server log is here https://pastebin.com/z6B0uwh8 but I think this is the relevant part:

...
[13:25:38.185] [Server thread/INFO] [minecraft/DedicatedServer]: Preparing level "world"
[13:25:38.369] [Server thread/INFO] [minecraft/SimpleReloadableResourceManager]: Reloading ResourceManager: trashbin-1.0.0.jar, forge-1.14.4-28.0.45-universal.jar, Default
[13:25:38.813] [Server thread/ERROR] [minecraft/RecipeManager]: Parsing error loading recipe trashbin:item_trashbin
com.google.gson.JsonSyntaxException: Unknown item 'trashbin:item_trashbin'
	at net.minecraft.item.crafting.ShapedRecipe.lambda$deserializeItem$0(ShapedRecipe.java:264) ~[?:?]
	at java.util.Optional.orElseThrow(Unknown Source) ~[?:1.8.0_221]
	...
...
[13:25:39.048] [Server thread/ERROR] [minecraft/LootTableManager]: Couldn't parse loot table trashbin:blocks/block_trashbin
com.google.gson.JsonSyntaxException: Expected name to be an item, was unknown string 'trashbin:item_trashbin'
	at net.minecraft.util.JSONUtils.func_219793_a(SourceFile:128) ~[?:?]
	at java.util.Optional.orElseThrow(Unknown Source) ~[?:1.8.0_221]
	...
...

So it seems to me it's loading the mod but "trashbin:item_trashbin" can't be found because it wasn't registered properly (?).

The full source can be found here https://github.com/PekkaAstala/minecraft-mod-trashbin but I think this is the relevant file:

@Mod("trashbin")
public class TrashbinMod
{
    private static final Logger LOGGER = LogManager.getLogger();

    public TrashbinMod() {
        FMLJavaModLoadingContext.get().getModEventBus().addListener(this::doClientStuff);
        MinecraftForge.EVENT_BUS.register(this);
    }

    private void doClientStuff(final FMLClientSetupEvent event) {
        ScreenManager.registerFactory(ModBlocks.TRASHBIN_CONTAINER, BlockTrashbinScreen::new);
    }

    @Mod.EventBusSubscriber(bus=Mod.EventBusSubscriber.Bus.MOD)
    public static class RegistryEvents {

        @SubscribeEvent
        public static void onBlocksRegistry(final RegistryEvent.Register<Block> event) {

            event.getRegistry().registerAll(
                new BlockTrashbin().setRegistryName(Reference.MODID, "block_trashbin")
            );

        }

        @SubscribeEvent
        public static void onTileEntityRegistry(final RegistryEvent.Register<TileEntityType<?>> event) {
            event.getRegistry().register(TileEntityType.Builder.create(BlockTrashbinTile::new, ModBlocks.TRASHBIN).build(null).setRegistryName("tile_trashbin"));
        }

        @SubscribeEvent
        public static void onItemsRegistry(final RegistryEvent.Register<Item> event) {
            event.getRegistry().registerAll(
                new BlockItem(
                    GameRegistry.findRegistry(Block.class).getValue(ResourceLocation.tryCreate("trashbin:block_trashbin")),
                    new Item.Properties()
                ).setRegistryName(Reference.MODID, "item_trashbin")
            );
        }

        @SubscribeEvent
        public static void onContainerRegistry(final RegistryEvent.Register<ContainerType<?>> event) {
            event.getRegistry().registerAll(
                IForgeContainerType.create(((windowId, inv, data) -> {
                    BlockPos pos = data.readBlockPos();
                    return new BlockTrashbinContainer(windowId, Minecraft.getInstance().world, pos, inv, Minecraft.getInstance().player);
                })).setRegistryName("container_trashbin")
            );
        }
    }
}

Could someone help me forward? I have read the basic docs on the forge site about sides and registries but I might need a code example of this being done right or something. Thank you!