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            <b><a class="bz_bug_link 
          bz_status_UNCONFIRMED "
   title="UNCONFIRMED - Fatal error with mailmerge"
   href="https://bugs.documentfoundation.org/show_bug.cgi?id=121951#c2">Comment # 2</a>
              on <a class="bz_bug_link 
          bz_status_UNCONFIRMED "
   title="UNCONFIRMED - Fatal error with mailmerge"
   href="https://bugs.documentfoundation.org/show_bug.cgi?id=121951">bug 121951</a>
              from <span class="vcard"><a class="email" href="mailto:himajin100000@gmail.com" title="himajin100000@gmail.com">himajin100000@gmail.com</a>
</span></b>
        <pre>Similar problem is reported on Japanese ask.libreoffice.org

<a href="https://ask.libreoffice.org/ja/question/171031/libreoffice-writer-6062-detabesunojiao-huan-huairunozhong-lei/">https://ask.libreoffice.org/ja/question/171031/libreoffice-writer-6062-detabesunojiao-huan-huairunozhong-lei/</a>

Though I did not know enough about the cause, only as a tentative patch , I
applied the following modification on my environment as given in the
forementioned forum, and now I see no errors.

1. comment-out the following three lines in void
SbaTableQueryBrowser::unloadAndCleanup( bool _bDisposeConnection )

Reference< XLoadable > xLoadable = getLoadable();
if (xLoadable->isLoaded())
     xLoadable->unload();

2. explicitly specify false as the parameter of unloadAndCleanup, and avoid
relying on default parameter true
<a href="https://opengrok.libreoffice.org/xref/core/dbaccess/source/ui/browser/unodatbr.cxx?r=6311f7ff#3708">https://opengrok.libreoffice.org/xref/core/dbaccess/source/ui/browser/unodatbr.cxx?r=6311f7ff#3708</a>

so that disposeConnection is not executed.
<a href="https://opengrok.libreoffice.org/xref/core/dbaccess/source/ui/browser/unodatbr.cxx?r=6311f7ff#2982">https://opengrok.libreoffice.org/xref/core/dbaccess/source/ui/browser/unodatbr.cxx?r=6311f7ff#2982</a>

3. comment out the following three lines

<a href="https://opengrok.libreoffice.org/xref/core/dbaccess/source/ui/browser/unodatbr.cxx?r=6311f7ff#3731">https://opengrok.libreoffice.org/xref/core/dbaccess/source/ui/browser/unodatbr.cxx?r=6311f7ff#3731</a>

DBTreeListUserData* pData = static_cast< DBTreeListUserData* >(
pDataSourceEntry->GetUserData() );
pDataSourceEntry->SetUserData( nullptr );
delete pData;

by doing all these three, LibreOffice stopped running
FPreaparedStatement::close

I'm not going to submit the patch myself for the inadequate understanding. I
would be happy if someone helps me.</pre>
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