Fixed UnsupportedOperationException

Author: Intelli

src/main/java/net/coreprotect/utility/BlockUtils.java

@@ -207,7 +207,7 @@ public static Inventory getContainerInventory(BlockState blockState, boolean sin
         try {
             if (blockState instanceof BlockInventoryHolder) {
                 if (singleBlock) {
-                    List<Material> chests = java.util.Arrays.asList(Material.CHEST, Material.TRAPPED_CHEST);
+                    List<Material> chests = new java.util.ArrayList<>(java.util.Arrays.asList(Material.CHEST, Material.TRAPPED_CHEST));
                     chests.addAll(BukkitAdapter.ADAPTER.copperChestMaterials());
                     Material type = blockState.getType();
                     if (chests.contains(type)) {