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            <b><a class="bz_bug_link 
          bz_status_UNCONFIRMED "
   title="UNCONFIRMED - Mail Merge Wizard freezes LibreOffice"
   href="https://bugs.documentfoundation.org/show_bug.cgi?id=144354#c6">Comment # 6</a>
              on <a class="bz_bug_link 
          bz_status_UNCONFIRMED "
   title="UNCONFIRMED - Mail Merge Wizard freezes LibreOffice"
   href="https://bugs.documentfoundation.org/show_bug.cgi?id=144354">bug 144354</a>
              from <span class="vcard"><a class="email" href="mailto:stephane.guillou@member.fsf.org" title="stragu <stephane.guillou@member.fsf.org>"> <span class="fn">stragu</span></a>
</span></b>
        <pre>I saw the mention of libebook-1.2, so tried to locate it:

locate libebook-1.2
/usr/lib/x86_64-linux-gnu/libebook-1.2.so.19
/usr/lib/x86_64-linux-gnu/libebook-1.2.so.19.1.3
/usr/share/doc/libebook-1.2-19
/usr/share/doc/libebook-1.2-19/changelog.Debian.gz
/usr/share/doc/libebook-1.2-19/copyright
/var/lib/dpkg/info/libebook-1.2-19:amd64.list
/var/lib/dpkg/info/libebook-1.2-19:amd64.md5sums
/var/lib/dpkg/info/libebook-1.2-19:amd64.shlibs
/var/lib/dpkg/info/libebook-1.2-19:amd64.symbols
/var/lib/dpkg/info/libebook-1.2-19:amd64.triggers

Could the version mismatch be the issue?
Looks like libebook-1.2.so.20 is only available form Ubuntu 20.04:
<a href="https://packages.ubuntu.com/focal/libs/libebook-1.2-20">https://packages.ubuntu.com/focal/libs/libebook-1.2-20</a></pre>
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