fix: network remote when break grid (#133)

Co-authored-by: ybw0014 <i@guizhanss.com>

Author: scorninpc

src/main/java/io/github/sefiraat/networks/slimefun/tools/NetworkRemote.java

@@ -101,6 +101,12 @@ public static void tryOpenGrid(@Nonnull ItemStack itemStack, @Nonnull Player pla
 
     public static void openGrid(@Nonnull Location location, @Nonnull Player player) {
         SlimefunBlockData blockData = StorageCacheUtils.getBlock(location);
+
+        if (blockData == null) {
+            player.sendMessage(Theme.ERROR + "无法找到绑定的网格");
+            return;
+        }
+        
         StorageCacheUtils.executeAfterLoad(blockData, () -> {
             if (SlimefunItem.getById(blockData.getSfId()) instanceof NetworkGrid
                 && Slimefun.getProtectionManager().hasPermission(player, location, Interaction.INTERACT_BLOCK)) {