Problem With FillBorders

[DizzyMontage13]

The code
public class AuctionsInventory implements InventoryProvider {

private final UserEngine userEngine;
private final ItemsEngine itemsEngine;
private final SmartInventory inventory;

public AuctionsInventory(UserEngine userEngine, ItemsEngine itemsEngine) {
    this.userEngine = userEngine;
    this.itemsEngine = itemsEngine;
    this.inventory = SmartInventory.builder()
            .id("myInventory")
            .provider(this)
            .size(6, 9)
            .title(ChatUtil.fixColor("&6&lMARKET"))
            .build();
}

@Override
public void init(Player player, InventoryContents inventoryContents) {
    Pagination pagination = inventoryContents.pagination();

    ClickableItem[] items = new ClickableItem[50];
    for(int i = 0; i < 50; i++)
        items[i] = ClickableItem.empty(new ItemStack(Material.CARROT_ITEM));

    pagination.setItems(items);
    pagination.setItemsPerPage(28);
    
    inventoryContents.fillBorders(ClickableItem.empty(new ItemBuilder(Material.STAINED_GLASS_PANE, 1, (byte) 15).toItemStack()));
    pagination.addToIterator(inventoryContents.newIterator(SlotIterator.Type.HORIZONTAL, SlotPos.of(1,1 )));
    inventoryContents.set(5,3,ClickableItem.of(
            new ItemBuilder(Material.ARROW).setName("&fPoprzednia Strona").toItemStack(),
            event -> this.inventory.open(player, pagination.previous().getPage())));

    inventoryContents.set(5,4, ClickableItem.empty(
            new ItemBuilder(Material.CAULDRON).setName("&7INFORMACJE")
            .setLore(Arrays.asList("","")).toItemStack()));

    inventoryContents.set(5,5,ClickableItem.of(
            new ItemBuilder(Material.ARROW).setName("&fNastępna Strona").toItemStack(),
            event -> this.inventory.open(player, pagination.next().getPage())));


}

@Override
public void update(Player player, InventoryContents inventoryContents) {
    
}

public SmartInventory getInventory() {
    return this.inventory;
}

}

[DizzyMontage13]

The items put in borders maybe iterrator is wrong or something can someone give me a resollution ?

[NightLabMC]

Use version 1.3 you won't need this normally, but in your case
create Iterator and add the desired slot in blacklist like that :

SlotIterator iter = contents.newIterator(SlotIterator.Type.HORIZONTAL, 1, 1);

    iter.blacklist(1,8);
    iter.blacklist(2,0);
    iter.blacklist(2,8);
    iter.blacklist(3,0);
    iter.blacklist(3,8);
    iter.blacklist(4,0);
    iter.blacklist(4,8);


pagination.addToIterator(iter);

[MinusKube]

You can also use iter.allowOverride(false) so the iterator will skip non-empty slots