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            <b><a class="bz_bug_link 
          bz_status_NEW "
   title="NEW - Error read rtf created Gnostice eDocEngine V5.0.0.548"
   href="https://bugs.documentfoundation.org/show_bug.cgi?id=142325#c4">Comment # 4</a>
              on <a class="bz_bug_link 
          bz_status_NEW "
   title="NEW - Error read rtf created Gnostice eDocEngine V5.0.0.548"
   href="https://bugs.documentfoundation.org/show_bug.cgi?id=142325">bug 142325</a>
              from <span class="vcard"><a class="email" href="mailto:serval2412@yahoo.fr" title="Julien Nabet <serval2412@yahoo.fr>"> <span class="fn">Julien Nabet</span></a>
</span></b>
        <pre>Created <span class=""><a href="https://bugs.documentfoundation.org/attachment.cgi?id=172212" name="attach_172212" title="new rtf">attachment 172212</a> <a href="https://bugs.documentfoundation.org/attachment.cgi?id=172212&action=edit" title="new rtf">[details]</a></span>
new rtf

I noticed that after unicode character, there's \'3

For example in the first line, you got:
author Miloslava H\u345\'3?

If you remove all the "\'3" so we'll have here:
author Miloslava H\u345?

It'll work.

I attached the file with this pattern removed.

>From <a href="https://en.wikipedia.org/wiki/Rich_Text_Format">https://en.wikipedia.org/wiki/Rich_Text_Format</a>, it tells:
"For a Unicode escape, the control word \u is used, followed by a 16-bit signed
integer which corresponds to the Unicode UTF-16 code unit number. For the
benefit of programs without Unicode support, this must be followed by the
nearest representation of this character in the specified code page. For
example, \u1576? would give the Arabic letter bāʼ ب, but indicates that older
programs which do not support Unicode should render it as a question mark
instead. "</pre>
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