Fix more namespacedkey parsing (#6903)

patches/server/0837-Fix-Bukkit-NamespacedKey-shenanigans.patch

@@ -4,6 +4,32 @@ Date: Sun, 24 Oct 2021 15:49:35 +0200
 Subject: [PATCH] Fix Bukkit NamespacedKey shenanigans
 
 
+diff --git a/src/main/java/com/destroystokyo/paper/loottable/PaperMinecartLootableInventory.java b/src/main/java/com/destroystokyo/paper/loottable/PaperMinecartLootableInventory.java
+index 6d2e0493729b7b4e109ff103a6ac36c9901568c0..83dd3c254fd10e4596e454cc75c8e5e976b73ac0 100644
+--- a/src/main/java/com/destroystokyo/paper/loottable/PaperMinecartLootableInventory.java
++++ b/src/main/java/com/destroystokyo/paper/loottable/PaperMinecartLootableInventory.java
+@@ -16,7 +16,7 @@ public class PaperMinecartLootableInventory implements PaperLootableEntityInvent
+ 
+     @Override
+     public org.bukkit.loot.LootTable getLootTable() {
+-        return entity.lootTable != null ? Bukkit.getLootTable(CraftNamespacedKey.fromMinecraft(entity.lootTable)) : null;
++        return entity.lootTable != null && !entity.lootTable.getPath().isEmpty() ? Bukkit.getLootTable(CraftNamespacedKey.fromMinecraft(entity.lootTable)) : null;
+     }
+ 
+     @Override
+diff --git a/src/main/java/com/destroystokyo/paper/loottable/PaperTileEntityLootableInventory.java b/src/main/java/com/destroystokyo/paper/loottable/PaperTileEntityLootableInventory.java
+index 3377b86c337d0234bbb9b0349e4034a7cd450a97..94dc68182ec5f6dc1294ad15523427836228086a 100644
+--- a/src/main/java/com/destroystokyo/paper/loottable/PaperTileEntityLootableInventory.java
++++ b/src/main/java/com/destroystokyo/paper/loottable/PaperTileEntityLootableInventory.java
+@@ -15,7 +15,7 @@ public class PaperTileEntityLootableInventory implements PaperLootableBlockInven
+ 
+     @Override
+     public org.bukkit.loot.LootTable getLootTable() {
+-        return tileEntityLootable.lootTable != null ? Bukkit.getLootTable(CraftNamespacedKey.fromMinecraft(tileEntityLootable.lootTable)) : null;
++        return tileEntityLootable.lootTable != null && !tileEntityLootable.lootTable.getPath().isEmpty() ? Bukkit.getLootTable(CraftNamespacedKey.fromMinecraft(tileEntityLootable.lootTable)) : null;
+     }
+ 
+     @Override
 diff --git a/src/main/java/org/bukkit/craftbukkit/util/CraftNamespacedKey.java b/src/main/java/org/bukkit/craftbukkit/util/CraftNamespacedKey.java
 index 5f40d240b879e3989897b6e45725a8e5a6a7f194..5014192edb9616ce725fc1592832034789527b6f 100644
 --- a/src/main/java/org/bukkit/craftbukkit/util/CraftNamespacedKey.java