EPUB validation

Hi

All our EPUB fixed layout with .smil extension are rejected by Apple.

Those document are validated with epubcheck-5.1.0 but still we receive this message.

• ERROR ITMS-9000: "Missing prefix attribute in root (package) element of the OPF file. Please supply a prefix attribute with valid rendition value in root <package> element of the OPF file" at Book/BookAssets
• [2023-12-20 19:25:17 UTC] <main> DBG-X: The error code is: 1102
• [2023-12-20 19:25:17 UTC] <main> INFO: Done performing authentication.
• [2023-12-20 19:25:17 UTC] <main> DBG-X: Returning 1
• [2023-12-20T19:25:17Z] Cleaning upexit status 1

This is our content.opf metadata

<?xml version="1.0" encoding="utf-8"?>

<package version="3.0" unique-identifier="pub-id" xml:lang="en" xmlns="http://www.idpf.org/2007/opf">

<metadata xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:opf="http://www.idpf.org/2007/opf">

<dc:identifier id="pub-id">urn:isbn:9782923163932</dc:identifier>

<dc:title id="t1">Dodo la planète do : Chine-Sénégal</dc:title>

<meta refines="#t1" property="title-type">main</meta>

<meta refines="#t1" property="display-seq">1</meta>

<dc:language id="pub-language">fr</dc:language>

<dc:date>2012-11-13</dc:date>

<meta property="dcterms:modified">2013-10-08T15:30:00Z</meta>

<dc:creator id="creator01">Patrick Lacoursière</dc:creator>

<meta refines="#creator01" property="role" scheme="marc:relators">aut</meta>

<meta refines="#creator01" property="display-seq">1</meta>

<dc:creator id="creator02">Sylvie Bourbonnière</dc:creator>

<meta refines="#creator02" property="role" scheme="marc:relators">ill</meta>

<meta refines="#creator02" property="display-seq">2</meta>

<dc:publisher>La Montagne Secrète</dc:publisher>

<dc:rights>Copyright © 2012 Folle Avoine Productions</dc:rights>

<dc:contributor id="contributor01">Thomas Hellman</dc:contributor>

<meta refines="#contributor01" property="role" scheme="marc:relators">nrt</meta>

<meta refines="#contributor01" property="display-seq">1</meta>

<dc:contributor id="contributor02">Liu Fang</dc:contributor>

<meta refines="#contributor02" property="role" scheme="marc:relators">sng</meta>

<meta refines="#contributor02" property="display-seq">2</meta>

<dc:contributor id="contributor03">Idrissa Sissokho</dc:contributor>

<meta refines="#contributor03" property="role" scheme="marc:relators">sng</meta>

<meta refines="#contributor03" property="display-seq">3</meta>

<meta property="media:duration" refines="#mo-pageB">0:00:22</meta>

<meta property="media:duration" refines="#mo-pageD">0:00:24</meta>

<meta property="media:duration" refines="#mo-page1">0:00:16</meta>

<meta property="media:duration" refines="#mo-page3">0:00:16</meta>

<meta property="media:duration" refines="#mo-page5">0:00:15</meta>

<meta property="media:duration" refines="#mo-page7">0:00:16</meta>

<meta property="media:duration" refines="#mo-page10">0:00:18</meta>

<meta property="media:duration" refines="#mo-page11">0:00:17</meta>

<meta property="media:duration" refines="#mo-page13">0:00:15</meta>

<meta property="media:duration" refines="#mo-page15">0:00:19</meta>

<meta property="media:duration" refines="#mo-page18">0:00:14</meta>

<meta property="media:duration" refines="#mo-page19">0:00:18</meta>

<meta property="media:duration" refines="#mo-page21">0:00:15</meta>

<meta property="media:duration" refines="#mo-page23">0:00:15</meta>

<meta property="media:duration" refines="#mo-page25">0:00:20</meta>

<meta property="media:duration" refines="#mo-page27">0:00:25</meta>

<meta property="media:duration">0:05:26</meta>

<meta property="media:active-class">-epub-media-overlay-active</meta>

<meta name="cover" content="img-cov" />

</metadata>