Elasticsearch分页问题[求大佬解答]

扩展包是 babenkoivan/scout-elasticsearch-driver
自己的博客最近查看一下发现搜索跳下一页直接报错：

{"error":{"root_cause":[{"type":"parsing_exception","reason":"[query_string] unknown token [VALUE_NULL] after [query]","line":1,"col":51}],"type":"x_content_parse_exception","reason":"[1:51] [bool] failed to parse field [must]","caused_by":{"type":"parsing_exception","reason":"[query_string] unknown token [VALUE_NULL] after [query]","line":1,"col":51}},"status":400}

自然而然的想到了Es的问题，应该出现在分页上了，求大佬解答！！！

搜索的控制器

<?php

namespace App\Http\Controllers;

use App\Articles;
use App\Models\Article;
use Illuminate\Http\Request;

class SearchController extends Controller
{
    public function index(Request $request)
    {
//         $articles = Article::where('title', 'like', "%{$request->keyword}%")->paginate();

        $articles = Articles::search($request->keyword)->paginate();


        return view('default.search_article', compact('articles'));
    }
}