我正在尝试在我的网站上安装主题，我正在使用xenforo，但是在尝试上载样式时出现此错误。“第183行：模板语法错误。”但我似乎无法找出问题所在。我将在下面保留代码。
<div class="search-option">
<xf:if is="$searchConstraints">
<div class="inputGroup inputGroup--joined">
<xf:select name="constraints"
class="js-quickSearch-constraint"
aria-label="{{ phrase('search_within') }}">
<xf:option value="">{{ phrase('everywhere') }}</xf:option>
<xf:foreach loop="$searchConstraints" key="$constraintName" value="$constraint">
<xf:option value="{$constraint|json}">{$constraintName}</xf:option>
</xf:foreach>
</xf:select>
</div>
</xf:if>
<!--[XF:search_menu:above_title_only]-->
<div class="menu-row">
<xf:checkbox standalone="true"><xf:option name="c[title_only]" label="{{ phrase('search_titles_only') }}" /></xf:checkbox>
</div>
<!--[XF:search_menu:above_member]-->
<div class="menu-row">
<div class="inputGroup">
<span class="inputGroup-text" id="ctrl_search_menu_by_member">{{ phrase('by:') }}</span>
<input class="input" name="c[users]" data-xf-init="auto-complete" placeholder="{{ phrase('member')|for_attr }}" aria-labelledby="ctrl_search_menu_by_member" />
</div>
</div>
<div class="menu-footer">
<span class="menu-footer-controls">
<xf:button type="submit" class="button--primary" icon="search" />
<xf:button href="{{ link('search') }}" rel="nofollow">{{ phrase('advanced_search...') }}</xf:button>
</span>
</div>
</div>