Following the XML Code snippet displays the title of books made by a particular author, using XSLT for each element. The book titles are in sorted order.

1.<xsl:for-each select="author/books">
2.<xsl:sort select="book-title" data-type="text" order="ascending"/>
3.        <tr>
4.                <td><xsl:value of  select="book-title"/></td>
5.           </tr>
6.</xsl:for-each>
On which line will the error occur?

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