Hello.
I’m trying to publish a book on the fair.com book portal, but I’ve been rejected again and again.
Indicates missing metadata:
__________________________________________________ ___________
Errors have been detected in the OPF file.
The metadata does not include language(s). The <dc:language> tag is missing in the metadata area of the OPF file.
Errors were found within your PDF file.
Error / Metadata: Important information is missing from the metadata: Title.
Error / Metadata: Important information is missing from the metadata: Author.
__________________________________________________ __________
But my ebub file of the book contains this data.
There are <dc:title> and <dc:creator> (author) and <dc:language>en-GB</dc:language>.
Help me understand where the error is here.
Thanks in advance for any help!
Here is my content.opf
Code:
<?xml version="1.0" encoding="utf-8"?>
<package version="3.0" unique-identifier="BookId" prefix="rendition: http://www.idpf.org/vocab/rendition/#" xmlns="http://www.idpf.org/2007/opf" xmlns:fo="http://www.w3.org/1999/XSL/Format" xmlns:fb="https://www.facebook.com/profile.phpid=100090128767249" xmlns:xlink="http://www.w3.org/1999/xlink">
<metadata xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:dcterms="http://purl.org/dc/terms/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:opf="http://www.idpf.org/2007/opf">
<dc:title id="title">Hello, New Ukraine! or Big Offence of little putin.</dc:title>
<meta refines="#title" property="title-type">main</meta>
<dc:creator id="create">Oleg Balan</dc:creator>
<meta refines="#create" property="role" scheme="marc:relators">aut</meta>
<meta refines="#create" property="file-as">Balan, Oleg</meta>
<dc:description>This publication is a story about Kiev Maidan, covering the period from November 2013 to February 2014, an eyewitness and participant in the events Oleg Balan. The author gives his opinion on the causes of the war between Russia and Ukraine.</dc:description>
<dc:publisher>Yurka Lyubchenka Publishing House</dc:publisher>
<dc:subject>Socio-political publication</dc:subject>
<dc:language>en-GB</dc:language>
<dc:identifier id="BookId">urn:isbn:9786177221912</dc:identifier>
<meta name="Sigil version" content="2.0.1" />
<meta refines="#title" property="file-as">Hello, New Ukraine! or Big Offence of little putin.</meta>
<meta name="calibre:author_link_map" content="{"Олег Балан": ""}" />
<meta name="cover" content="cover.jpg" />
<meta property="dcterms:modified">2023-08-30T21:15:05Z</meta>
</metadata>
<manifest>
<item id="cover.xhtml" href="cover.xhtml" media-type="application/xhtml+xml"/>
<item id="cover.jpg" href="images/cover.jpg" media-type="image/jpeg" properties="cover-image"/>
<item id="content0.xhtml" href="content0.xhtml" media-type="application/xhtml+xml"/>
<item id="content1.xhtml" href="content1.xhtml" media-type="application/xhtml+xml"/>
<item id="content2.xhtml" href="content2.xhtml" media-type="application/xhtml+xml"/>
<item id="content3.xhtml" href="content3.xhtml" media-type="application/xhtml+xml"/>
<item id="content4.xhtml" href="content4.xhtml" media-type="application/xhtml+xml"/>
<item id="content5.xhtml" href="content5.xhtml" media-type="application/xhtml+xml"/>
<item id="contentnotes0.xhtml" href="contentnotes0.xhtml" media-type="application/xhtml+xml"/>
<item id="ncx" href="toc.ncx" media-type="application/x-dtbncx+xml"/>
<item id="css" href="css/style.css" media-type="text/css"/>
<item id="font_css" href="css/unicode_fonts.css" media-type="text/css"/>
<item id="index-59_2.jpg" href="images/index-59_2.jpg" media-type="image/jpeg"/>
<item id="index-26_1.jpg" href="images/index-26_1.jpg" media-type="image/jpeg"/>
<item id="index-21_1.jpg" href="images/index-21_1.jpg" media-type="image/jpeg"/>
<item id="index-26_2.jpg" href="images/index-26_2.jpg" media-type="image/jpeg"/>
<item id="index-28_1.jpg" href="images/index-28_1.jpg" media-type="image/jpeg"/>
<item id="index-32_1.jpg" href="images/index-32_1.jpg" media-type="image/jpeg"/>
<item id="index-33_1.jpg" href="images/index-33_1.jpg" media-type="image/jpeg"/>
<item id="index-34_1.jpg" href="images/index-34_1.jpg" media-type="image/jpeg"/>
<item id="index-37_1.jpg" href="images/index-37_1.jpg" media-type="image/jpeg"/>
<item id="index-46_1.jpg" href="images/index-46_1.jpg" media-type="image/jpeg"/>
<item id="index-49_1.jpg" href="images/index-49_1.jpg" media-type="image/jpeg"/>
<item id="index-52_1.jpg" href="images/index-52_1.jpg" media-type="image/jpeg"/>
<item id="index-54_1.jpg" href="images/index-54_1.jpg" media-type="image/jpeg"/>
<item id="index-57_1.jpg" href="images/index-57_1.jpg" media-type="image/jpeg"/>
<item id="navid" href="nav.xhtml" media-type="application/xhtml+xml" properties="nav"/>
<item id="intro.jpg" href="images/intro.jpg" media-type="image/jpeg"/>
<item id="index-59_3.jpg" href="images/index-59_3.jpg" media-type="image/jpeg"/>
<item id="index-25_1.jpg" href="images/index-25_1.jpg" media-type="image/jpeg"/>
<item id="index-25_2.jpg" href="images/index-25_2.jpg" media-type="image/jpeg"/>
<item id="DIN-Alternate-Bold.otf" href="fonts/DIN-Alternate-Bold.otf" media-type="font/otf"/>
<item id="Georgia.otf" href="fonts/Georgia.otf" media-type="font/otf"/>
<item id="Georgia-Bold.otf" href="fonts/Georgia-Bold.otf" media-type="font/otf"/>
<item id="Georgia-BoldItalic.otf" href="fonts/Georgia-BoldItalic.otf" media-type="font/otf"/>
<item id="Georgia-Italic.otf" href="fonts/Georgia-Italic.otf" media-type="font/otf"/>
</manifest>
<spine toc="ncx">
<itemref idref="cover.xhtml"/>
<itemref idref="content0.xhtml"/>
<itemref idref="content1.xhtml"/>
<itemref idref="content2.xhtml"/>
<itemref idref="content3.xhtml"/>
<itemref idref="content4.xhtml"/>
<itemref idref="content5.xhtml"/>
<itemref idref="contentnotes0.xhtml"/>
<itemref idref="navid"/>
</spine>
<guide>
<reference type="cover" title="Cover" href="cover.xhtml"/>
<reference type="notes" title="Notes" href="contentnotes0.xhtml"/>
</guide>
</package>