Custom self closing label parsing error, resulting in incorrect document structure

[gengfanbin]

Sorry, my English is not very good, but I have encountered a problem and have to submit it.
I encountered a parsing error when using Cheerio to load the following code. I suspect that the custom self closing tag cannot be parsed properly.
Here is the sample code

<div>
    <upgrade_popup   />
    <div></div>
</div>

It will be parsed as follows:

<div>
    <upgrade_popup>
        <div></div>
    </upgrade_popup>
</div>