Fixes #2664

CHANGELOG.md

@@ -39,6 +39,7 @@
 * Fixed ghost blocks to some extent (ghost blocks will now drop and be replaced)
 * Fixed #2636 (hotfix)
 * Fixed #2647
+* Fixed #2664
 
 ## Release Candidate 18 (03 Dec 2020)
 

src/main/java/io/github/thebusybiscuit/slimefun4/implementation/items/androids/ProgrammableAndroid.java

@@ -673,6 +673,7 @@ public class ProgrammableAndroid extends SlimefunItem implements InventoryBlock,
         }
     }
 
+    @ParametersAreNonnullByDefault
     private void executeInstruction(Instruction instruction, Block b, BlockMenu inv, Config data, int index) {
         if (getAndroidType().isType(instruction.getRequiredType())) {
             String rotationData = data.getString("rotation");
@@ -830,13 +831,18 @@ public class ProgrammableAndroid extends SlimefunItem implements InventoryBlock,
         preset.addItem(34, getFuelSource().getItem(), ChestMenuUtils.getEmptyClickHandler());
     }
 
+    @ParametersAreNonnullByDefault
     public void addItems(Block b, ItemStack... items) {
+        Validate.notNull(b, "The Block cannot be null.");
+
         BlockMenu inv = BlockStorage.getInventory(b);
 
+        if (inv != null) {
             for (ItemStack item : items) {
                 inv.pushItem(item, getOutputSlots());
             }
         }
+    }
 
     protected void move(Block b, BlockFace face, Block block) {
         if (block.getY() > 0 && block.getY() < block.getWorld().getMaxHeight() && block.isEmpty()) {

src/main/java/io/github/thebusybiscuit/slimefun4/implementation/listeners/ButcherAndroidListener.java

@@ -68,7 +68,8 @@ public class ButcherAndroidListener implements Listener {
     }
 
     /**
-     * Some items are not dropped by default. Wither Skeleton Skulls but for some weird reason
+     * Some items are not dropped by default.
+     * Wither Skeleton Skulls but for some weird reason
      * even Blaze rods...
      * 
      * @param drops