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    <p>Hello Frank,</p>
    <p>I see you have an extra space in the "href" attribute value
      before the "data:" part, is it possible the error refers to that
      extra space in the href value?</p>
    <p>If so you should remove that extra starting space from the @href
      value because the href attribute needs to contain an URI-like
      reference.<br>
    </p>
    <p>If not, would it be possible for you to send us directly
      (<a class="moz-txt-link-abbreviated" href="mailto:support@oxygenxml.com">support@oxygenxml.com</a>) a small DITA topic containing such an
      image with which I could reproduce the problem?<br>
    </p>
    <p>Regards,</p>
    <p>Radu</p>
    <pre class="moz-signature" cols="72">Radu Coravu
Oxygen XML Editor</pre>
    <p></p>
    <div class="moz-cite-prefix">On 12/17/24 11:49, Frank Dissinger
      wrote:<br>
    </div>
    <blockquote type="cite"
      cite="mid:1637613097.01734429122774.JavaMail.alg@alg">
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        <p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Verdana",sans-serif">Hi
            list,<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Verdana",sans-serif"><o:p> </o:p></span></p>
        <p class="MsoNormal"><span lang="EN-US"
style="font-size:10.0pt;font-family:"Verdana",sans-serif">In
            one of my Oxygen projects, I need to generate an HTML file
            from DITA sources without using any external links. To
            achieve this, I embed a few icons directly into the output
            file using the following DITA code:<o:p></o:p></span></p>
        <p class="MsoNormal"><span lang="EN-US"
style="font-size:10.0pt;font-family:"Verdana",sans-serif"><o:p> </o:p></span></p>
        <p class="MsoNormal"><span lang="EN-US"
style="font-size:10.0pt;font-family:"Verdana",sans-serif"><image
            href=<a class="moz-txt-link-rfc2396E" href="data:image/png;base64,iVBOR…”scope=">" data:image/png;base64,iVBOR…” scope="</a>external<b>"</b>/><b>
            </b><o:p></o:p></span></p>
        <p class="MsoNormal"><span lang="EN-US"
style="font-size:10.0pt;font-family:"Verdana",sans-serif"><o:p> </o:p></span></p>
        <p class="MsoNormal"><span lang="EN-US"
style="font-size:10.0pt;font-family:"Verdana",sans-serif">The
            â€¦ represents the remaining 1585 characters of the
            base64-encoded image data.<o:p></o:p></span></p>
        <p class="MsoNormal"><span lang="EN-US"
style="font-size:10.0pt;font-family:"Verdana",sans-serif"><o:p> </o:p></span></p>
        <p class="MsoNormal"><span lang="EN-US"
style="font-size:10.0pt;font-family:"Verdana",sans-serif">When
            I save the DITA file, Oxygen repeatedly displays the
            following error:<br>
            <br>
            <o:p></o:p></span></p>
        <table class="MsoNormalTable" border="0" cellspacing="3"
          cellpadding="0" width="100%" style="width:100.0%">
          <tbody>
            <tr>
              <td nowrap="nowrap" valign="top"
style="border:solid #E8E8E8 1.0pt;padding:1.5pt 1.5pt 1.5pt 1.5pt">
                <p class="MsoNormal"><b><span
style="font-size:10.0pt;font-family:"Verdana",sans-serif">Description</span></b><b><span
style="font-size:10.0pt;font-family:"Arial",sans-serif"> </span></b><b><span
style="font-size:10.0pt;font-family:"Verdana",sans-serif"> <o:p></o:p></span></b></p>
              </td>
              <td width="89%"
style="width:89.94%;border:solid #E8E8E8 1.0pt;padding:1.5pt 1.5pt 1.5pt 1.5pt">
                <p class="MsoNormal"><span lang="EN-US"
style="font-size:10.0pt;font-family:"Verdana",sans-serif">Reference
                    " <a class="moz-txt-link-freetext" href="data:image/png;base64">data:image/png;base64</a></span><span lang="EN-US"
style="font-size:10.0pt;font-family:"Arial",sans-serif"> </span><span
                    lang="EN-US"
style="font-size:10.0pt;font-family:"Verdana",sans-serif">
                    ,iVBOR…".</span><span lang="EN-US"
style="font-size:10.0pt;font-family:"Arial",sans-serif"> </span><span
                    lang="EN-US"
style="font-size:10.0pt;font-family:"Verdana",sans-serif"> <o:p></o:p></span></p>
              </td>
            </tr>
            <tr>
              <td nowrap="nowrap" valign="top"
style="border:solid #E8E8E8 1.0pt;padding:1.5pt 1.5pt 1.5pt 1.5pt">
                <p class="MsoNormal"><b><span
style="font-size:10.0pt;font-family:"Verdana",sans-serif">Severity</span></b><b><span
style="font-size:10.0pt;font-family:"Arial",sans-serif"> </span></b><b><span
style="font-size:10.0pt;font-family:"Verdana",sans-serif"> <o:p></o:p></span></b></p>
              </td>
              <td width="89%"
style="width:89.94%;border:solid #E8E8E8 1.0pt;padding:1.5pt 1.5pt 1.5pt 1.5pt">
                <p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Verdana",sans-serif">Error</span><span
style="font-size:10.0pt;font-family:"Arial",sans-serif"> </span><span
style="font-size:10.0pt;font-family:"Verdana",sans-serif"> <o:p></o:p></span></p>
              </td>
            </tr>
            <tr>
              <td nowrap="nowrap" valign="top"
style="border:solid #E8E8E8 1.0pt;padding:1.5pt 1.5pt 1.5pt 1.5pt">
                <p class="MsoNormal"><b><span
style="font-size:10.0pt;font-family:"Verdana",sans-serif">Engine
                      name</span></b><b><span
style="font-size:10.0pt;font-family:"Arial",sans-serif"> </span></b><b><span
style="font-size:10.0pt;font-family:"Verdana",sans-serif"> <o:p></o:p></span></b></p>
              </td>
              <td width="89%"
style="width:89.94%;border:solid #E8E8E8 1.0pt;padding:1.5pt 1.5pt 1.5pt 1.5pt">
                <p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Verdana",sans-serif">DITA
                    Validation</span><span
style="font-size:10.0pt;font-family:"Arial",sans-serif"> </span><span
style="font-size:10.0pt;font-family:"Verdana",sans-serif"> <o:p></o:p></span></p>
              </td>
            </tr>
            <tr>
              <td nowrap="nowrap" valign="top"
style="border:solid #E8E8E8 1.0pt;padding:1.5pt 1.5pt 1.5pt 1.5pt">
                <p class="MsoNormal"><b><span
style="font-size:10.0pt;font-family:"Verdana",sans-serif">Additional
                      info</span></b><b><span
style="font-size:10.0pt;font-family:"Arial",sans-serif"> </span></b><b><span
style="font-size:10.0pt;font-family:"Verdana",sans-serif"> <o:p></o:p></span></b></p>
              </td>
              <td width="89%"
style="width:89.94%;border:solid #E8E8E8 1.0pt;padding:1.5pt 1.5pt 1.5pt 1.5pt">
                <p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Verdana",sans-serif"><a
href="https://www.oxygenxml.com/dita/1.3/specs/langRef/attributes/thehrefattribute.html"
                      moz-do-not-send="true"><span lang="EN-US">https://</span><span
                        lang="EN-US"
                        style="font-family:"Arial",sans-serif"> </span><span
                        lang="EN-US"> www.oxygenxml.com/dita/</span><span
                        lang="EN-US"
                        style="font-family:"Arial",sans-serif"> </span><span
                        lang="EN-US">1.3/specs/langRef/</span><span
                        lang="EN-US"
                        style="font-family:"Arial",sans-serif"> </span><span
                        lang="EN-US">attributes/</span><span
                        lang="EN-US"
                        style="font-family:"Arial",sans-serif"> </span><span
                        lang="EN-US"> thehrefattribute.html</span><span
                        lang="EN-US"
                        style="font-family:"Arial",sans-serif"> </span></a></span><span
style="font-size:10.0pt;font-family:"Verdana",sans-serif"> <span
                      lang="EN-US"><o:p></o:p></span></span></p>
              </td>
            </tr>
          </tbody>
        </table>
        <p class="MsoNormal"><span lang="EN-US"
style="font-size:10.0pt;font-family:"Verdana",sans-serif"><o:p> </o:p></span></p>
        <p class="MsoNormal"><span lang="EN-US"
style="font-size:10.0pt;font-family:"Verdana",sans-serif">Despite
            the error message, the HTML transformation works correctly,
            and the output file is generated as expected.<o:p></o:p></span></p>
        <p class="MsoNormal"><span lang="EN-US"
style="font-size:10.0pt;font-family:"Verdana",sans-serif">How
            can I prevent Oxygen from displaying these error messages?<o:p></o:p></span></p>
        <p class="MsoNormal"><span lang="EN-US"
style="font-size:10.0pt;font-family:"Verdana",sans-serif;mso-ligatures:none;mso-fareast-language:DE"><o:p> </o:p></span></p>
        <p class="MsoNormal" style="margin-bottom:12.0pt"><span
style="font-size:10.0pt;font-family:"Verdana",sans-serif;mso-ligatures:none;mso-fareast-language:DE">Freundliche
            Grüße | Best regards</span><span
            style="mso-ligatures:none;mso-fareast-language:DE"> </span><span
            style="mso-ligatures:none;mso-fareast-language:DE"><o:p></o:p></span></p>
        <p class="MsoNormal"><b><span
style="font-size:10.0pt;font-family:"Verdana",sans-serif;color:#7F8C8D;mso-ligatures:none;mso-fareast-language:DE">Frank
              Dissinger</span></b><span
style="font-size:10.0pt;font-family:"Verdana",sans-serif;color:#7F8C8D;mso-ligatures:none;mso-fareast-language:DE"><o:p></o:p></span></p>
        <p class="MsoNormal"><span lang="EN-US"
style="font-size:10.0pt;font-family:"Verdana",sans-serif;color:#7F8C8D;mso-ligatures:none;mso-fareast-language:DE">Documentation
            Manager<o:p></o:p></span></p>
        <p class="MsoNormal"><span lang="EN-US"
style="font-size:10.0pt;font-family:"Verdana",sans-serif;color:#7F8C8D;mso-ligatures:none;mso-fareast-language:DE">..........................................<o:p></o:p></span></p>
        <p class="MsoNormal"><b><span lang="EN-US"
style="font-size:10.0pt;font-family:"Verdana",sans-serif;color:#7F8C8D;mso-ligatures:none;mso-fareast-language:DE">CGS
              ORIS GmbH</span></b><span lang="EN-US"
style="font-size:10.0pt;font-family:"Verdana",sans-serif;color:#7F8C8D;mso-ligatures:none;mso-fareast-language:DE"><o:p></o:p></span></p>
        <p class="MsoNormal"><b><span lang="EN-US"
style="font-size:10.0pt;font-family:"Verdana",sans-serif;color:#7F8C8D;mso-ligatures:none;mso-fareast-language:DE">Email
            </span></b><span
style="font-size:10.0pt;font-family:"Verdana",sans-serif;color:#7F8C8D;mso-ligatures:none;mso-fareast-language:DE"><a
              href="mailto:frank.dissinger@cgs-oris.com"
              moz-do-not-send="true"><span lang="EN-US"
                style="color:#467886">frank.dissinger@cgs-oris.com</span></a></span><span
style="font-size:10.0pt;font-family:"Verdana",sans-serif;color:#7F8C8D;mso-ligatures:none;mso-fareast-language:DE">
            <span lang="EN-US">| <b>Web</b> </span></span><span
style="font-size:10.0pt;font-family:"Verdana",sans-serif;color:#7F8C8D;mso-ligatures:none;mso-fareast-language:DE"><a
              href="http://www.cgs-oris.com/" target="_blank"
              moz-do-not-send="true"><span lang="EN-US"
                style="color:blue">www.cgs-oris.com</span></a></span><span
            lang="EN-US"
style="font-size:10.0pt;font-family:"Verdana",sans-serif;color:#7F8C8D;mso-ligatures:none;mso-fareast-language:DE"><o:p></o:p></span></p>
        <p class="MsoNormal"><b><span lang="EN-US"
style="font-size:10.0pt;font-family:"Verdana",sans-serif;color:#7F8C8D;mso-ligatures:none;mso-fareast-language:DE">Address</span></b><span
            lang="EN-US"
style="font-size:10.0pt;font-family:"Verdana",sans-serif;color:#7F8C8D;mso-ligatures:none;mso-fareast-language:DE">
            Kettelerstrasse 24 | 63512 Hainburg | Germany<o:p></o:p></span></p>
        <p class="MsoNormal"><b><span lang="EN-US"
style="font-size:10.0pt;font-family:"Verdana",sans-serif;color:#7F8C8D;mso-ligatures:none;mso-fareast-language:DE">Phone</span></b><span
            lang="EN-US"
style="font-size:10.0pt;font-family:"Verdana",sans-serif;color:#7F8C8D;mso-ligatures:none;mso-fareast-language:DE">
            +49 6182 9626-0 | <b>Fax</b> +49 6182 9626-99<o:p></o:p></span></p>
        <p class="MsoNormal"><b><span lang="EN-US"
style="font-size:10.0pt;font-family:"Verdana",sans-serif;color:#7F8C8D;mso-ligatures:none;mso-fareast-language:DE">Commercial
              register</span></b><span lang="EN-US"
style="font-size:10.0pt;font-family:"Verdana",sans-serif;color:#7F8C8D;mso-ligatures:none;mso-fareast-language:DE">
            Offenbach, HRB no. 21495<o:p></o:p></span></p>
        <p class="MsoNormal" style="margin-bottom:12.0pt"><b><span
              lang="EN-US"
style="font-size:10.0pt;font-family:"Verdana",sans-serif;color:#7F8C8D;mso-ligatures:none;mso-fareast-language:DE">Managing
              directors</span></b><span lang="EN-US"
style="font-size:10.0pt;font-family:"Verdana",sans-serif;color:#7F8C8D;mso-ligatures:none;mso-fareast-language:DE">
            Bernd Rückert, Christoph Thommessen</span><span lang="EN-US"
            style="mso-ligatures:none;mso-fareast-language:DE"><o:p></o:p></span></p>
        <p class="MsoNormal"><a href="https://www.cgs-oris.com/signatur"
            moz-do-not-send="true"><span
style="font-size:8.0pt;font-family:"Tahoma",sans-serif;color:blue;mso-fareast-language:DE;text-decoration:none"><img
                border="0" width="394" height="200"
                style="width:4.1in;height:2.0833in" id="Bild_x0020_1"
                src="cid:part1.EGDjRmiQ.DNcV09GK@oxygenxml.com" class=""></span></a><span
style="font-size:8.0pt;font-family:"Tahoma",sans-serif;mso-fareast-language:DE"><img
              border="0" width="15" height="15"
              style="width:.1583in;height:.1583in" id="Bild_x0020_2"
              src="cid:part2.pscS10pn.hWMkzBw1@oxygenxml.com" class=""><span
              style="mso-ligatures:none">​</span></span><span
            style="mso-ligatures:none;mso-fareast-language:DE"><o:p></o:p></span></p>
        <p class="MsoNormal"><o:p> </o:p></p>
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    <pre class="moz-signature" cols="72">
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