PHP smarty problem, using include to refer to an HTML, but the content of the reference to add a line of empty text?

//引用处<{include file="template/page_top_bar.html" pageTitle="各地特产" backBtn=true reloadBtn=true}>

//被引用文件内容        <{if $backBtn!==false }>                                                <{/if}>       
<{$pageTitle}>
       <{if $reloadBtn!==false }><{/if}>

Results:

Why is there more than one line of empty text here? Makes the content of my page move down a lot

Reply content:

//引用处<{include file="template/page_top_bar.html" pageTitle="各地特产" backBtn=true reloadBtn=true}>

//被引用文件内容        <{if $backBtn!==false }>                                                <{/if}>       
<{$pageTitle}>
       <{if $reloadBtn!==false }><{/if}>

Results:

Why is there more than one line of empty text here? Makes the content of my page move down a lot

The encoding of the introduction file is best as the template
The file that was introduced is not edited with Notepad and edited with another editor

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