fix(develop): 修复报错

@@ -90,7 +90,7 @@ public function bandList(Request $request)
             $data = $query->get(['id']);
             //插入有序集合中
             Redis::client()->del($key);
-            Redis::client()->zAdd($key, ...$data->map(fn(Project $item) => [random_int(50, 200), $item->getKey()])->flatten()->toArray());
+            Redis::client()->zAdd($key, ...$data->map(fn(Project $item) => [random_int(50, 200), $item->getKey()])->flatten()->toArray() ?? []);
             Redis::client()->expire($key, 2 * 60 * 60);
         }
         $recommendIds = Redis::client()->zRevRange($key, $startIndex, $endIndex);