working

src/main/java/org/manapart/enderports/EnderPorts.kt

@@ -14,6 +14,4 @@ object EnderPorts {
         ModItems.REGISTRY.register(MOD_BUS)
     }
 
-    val icon = Item(Item.Properties())
-
 }

src/main/java/org/manapart/enderports/ModBlocks.kt

@@ -5,11 +5,9 @@ import net.minecraftforge.registries.ForgeRegistries
 import thedarkcolour.kotlinforforge.forge.registerObject
 
 object ModBlocks {
-    val teleporter = Teleporter()
-
     val REGISTRY = DeferredRegister.create(ForgeRegistries.BLOCKS, MODID)
 
     val TELEPORTER_BLOCK by REGISTRY.registerObject("teleporter") {
-        teleporter
+        Teleporter()
     }
 }

src/main/java/org/manapart/enderports/ModItems.kt

@@ -8,6 +8,6 @@ object ModItems {
     val REGISTRY = DeferredRegister.create(ForgeRegistries.ITEMS, MODID)
 
     val TELEPORT_ITEM by REGISTRY.registerObject("teleporteritem") {
-        TeleporterItem(ModBlocks.teleporter)
+        TeleporterItem(ModBlocks.TELEPORTER_BLOCK)
     }
 }

src/main/java/org/manapart/enderports/TeleporterItem.kt

@@ -1,6 +1,7 @@
 package org.manapart.enderports
 
 import net.minecraft.world.item.BlockItem
+import net.minecraft.world.item.CreativeModeTab
 
 
-class TeleporterItem(block: Teleporter) : BlockItem(block, Properties().tab(ItemGroupEP.instance))
+class TeleporterItem(block: Teleporter) : BlockItem(block, Properties().tab(CreativeModeTab.TAB_MISC))

src/main/java/org/manapart/enderports/TeleporterNetwork.kt

@@ -100,7 +100,7 @@ class TeleporterNetwork(private val world: Level) : SavedData() {
 
     private fun isTeleporter(pos: BlockPos): Boolean {
         val key = world.getBlockState(pos).block.descriptionId.toString()
-        return key == ModBlocks.teleporter.descriptionId.toString()
+        return key == ModBlocks.TELEPORTER_BLOCK.descriptionId.toString()
     }
 
     internal class NetworkSupplier(private val world: Level) : Supplier<TeleporterNetwork> {