title: TypeError: Cannot read properties of null (reading 'subTree')
body: <p>What does this error mean?</p>
  <p><a href="https://i.stack.imgur.com/8Be6u.png" rel="nofollow noreferrer">error message</a></p>
  <p>this happens when I put my filteredData variable inside the <code>tr</code> tag of the table.</p>
  <pre><code>  &lt;table id=&quot;table&quot;&gt;
      &lt;tr&gt;
        &lt;th&gt;First name&lt;/th&gt;
        &lt;th&gt;Last Name&lt;/th&gt;
        &lt;th&gt;Email&lt;/th&gt;
        &lt;th&gt;Original email&lt;/th&gt;
        &lt;th&gt;Actions&lt;/th&gt;
      &lt;/tr&gt;
      &lt;template&gt;
        &lt;tr v-if=&quot;(fiteredData = '')&quot;&gt;
          &lt;td&gt;&lt;/td&gt;
          &lt;td&gt;&lt;/td&gt;
          &lt;td&gt;&lt;/td&gt;
          &lt;td&gt;&lt;/td&gt;
          &lt;td&gt;&lt;/td&gt;
        &lt;/tr&gt;
        &lt;tr
          v-else
          v-for=&quot;data in filteredData&quot;
          :key=&quot;data.ind_id&quot;
          :value=&quot;data.ind_id&quot;
        &gt;
          &lt;td&gt;{{ data.first_name }}&lt;/td&gt;
          &lt;td&gt;{{ data.last_name }}&lt;/td&gt;
          &lt;td&gt;{{ data.email }}&lt;/td&gt;
          &lt;td&gt;{{ data.email }}&lt;/td&gt;
          &lt;td&gt;
            &lt;button @click=&quot;sendProps(data)&quot;&gt;
              &lt;i class=&quot;fa-regular fa-edit&quot; aria-hidden=&quot;true&quot;&gt;&lt;/i&gt;
            &lt;/button&gt;
          &lt;/td&gt;
        &lt;/tr&gt;
      &lt;/template&gt;
    &lt;/table&gt;
  </code></pre>
  <p>This is my method:</p>
  <pre><code>  data() {
      return {
        fetchedData: &quot;&quot;,
        filteredData: &quot;&quot;,
      };
    },
    methods: {
      searchResult(e) {
        this.filteredData = this.fetchedData.filter((data) =&gt; {
          return data.email.toLowerCase().includes(this.email.toLowerCase());
        });
        e.preventDefault();
        console.log(this.filteredData);
      }
  </code></pre>
  <p>fetchedData get the data from this:</p>
  <pre><code>  async mounted() {
      await axios.get(&quot;http://localhost:5000/individuals&quot;).then((result) =&gt; {
        this.fetchedData = result.data;
        console.log(this.fetchedData);
      });
    },
  </code></pre>