Close unclosed tags in HTML

Question

I need to get the inner HTML as output for an input complete HTML. However, the getInnerHtml function returns an incomplete HTML that cannot be rendered. A few tags are not closed properly, resulting in this issue.

Usage:

String possibleUrlData="<input html value>";
TagNode cleanResultNode = cleanString(possibleUrlData);
String result = cleaner.getInnerHtml(cleanResultNode);

Example input tag:

 <script defer="" src="/_next/static/chunks/6848-2e85e2aba8bb65b9.js"></script>

Output:

<script defer="" src="/_next/static/chunks/6848-2e85e2aba8bb65b9.js" />

When I close the output tag properly, the HTML becomes renderable.

Please suggest how to deal with this. I do not have much experience with HTMLs, so any advice regarding closing/removing the tags will be helpful.