QUARTZ_ORE was renamed to NETHER_QUARTZ_ORE

src/main/resources/itemweights.yml

@@ -11,7 +11,7 @@
 Item_Weights:
     Default: 5
     Quartz: 200
-    Quartz_Ore: 200
+    Nether_Quartz_Ore: 200
     Emerald: 150
     Emerald_Ore: 150
     Diamond: 100
@@ -93,4 +93,4 @@ Party_Shareables:
         - Leather_Helmet
         - Leather_Chestplate
         - Leather_Leggings
-        - Leather_Boots
+        - Leather_Boots