n class="op">(</span><span class="va">model</span><span class="op">)</span></span></span>
<span class="r-wrn co"><span class="r-pr">#&gt;</span> <span class="warning">Warning: </span>lavaan-&gt;lav_object_post_check():  </span>
<span class="r-wrn co"><span class="r-pr">#&gt;</span>    some estimated ov variances are negative</span>
<span class="r-in"><span><span class="fu"><a href="https://rdrr.io/r/base/summary.html" class="external-link">summary</a></span><span class="op">(</span><span class="va">res</