list.html  tag关键字 英文可以打开 中文就显示404  ？

/tag/拼多多.html 报错404 

/tag/pinduoduo.html  可以正常打开的 

代码如下：

 <ul class="search-container">
                                        <!--分页显示列表数据-->
                                        {list action=module catid=$catid field=title,url,updatetime,description,keywords,hits order=updatetime page=1}
                                        <li class="search-item clearfix">
                                            <div class="search-content text-left">
                                                <h4 class="search-title">
                                                    <a title="{$t.title}" href="{$t.url}">{$t.title}</a>
                                                </h4>
                                                <p class="search-desc">{$t.description}</p>
                                                <div class="search-post-foot">
                                                    <ul class="search-post-tags">
                                                        {php $kw=@explode(',', $t.keywords);}
                                                        {loop $kw $a}
                                                        {if $a}
                                                        <li class="uppercase">
                                                            <a href="{dr_tags_url($a)}" target="_blank">{$a}</a>
                                                        </li>
                                                        {/if}
                                                        {/loop}
                                                    </ul>
                                                    <div class="search-post-meta">
                                                        <i class="icon-calendar font-blue"></i>
                                                        <a href="javascript:;">{$t.updatetime}</a>
                                                    </div>
                                                    <div class="search-post-meta">
                                                        <i class="icon-fire font-blue"></i>
                                                        <a href="javascript:;">{$t.hits}次</a>
                                                    </div>
                                                    <div class="search-post-meta">
                                                        <i class="icon-bubble font-blue"></i>
                                                        <a href="javascript:;">{$t.comments}</a>
                                                    </div>
                                                </div>
                                            </div>
                                        </li>
                                        {/list}
                                    </ul>

大神看看 之前都是对  升级后就故障了