title: Vue.JS - Error in nextTick: “TypeError: Cannot read property ‘badInput’ of undefined”
body: <p>I received this Error:</p>
  <pre><code>vue.runtime.esm.js?2b0e:619 [Vue warn]: Error in nextTick: &quot;TypeError: Cannot read property 'badInput' of undefined&quot;
  
  found in
  
  ---&gt; &lt;MdSelect&gt; at src/components/MdField/MdSelect/MdSelect.vue
         &lt;MdField&gt; at src/components/MdField/MdField.vue
           &lt;MdCardContent&gt; at src/components/MdCard/MdCardContent/MdCardContent.vue
             &lt;MdCard&gt; at src/components/MdCard/MdCard.vue
               &lt;MdContent&gt; at src/components/MdContent/MdContent.vue
                 &lt;MdDialog&gt; at src/components/MdDialog/MdDialog.vue
                   &lt;Loading&gt; at src/components/Loading.vue
                     &lt;QuadroHorarioSalaNormal&gt;
                       &lt;Loading&gt; at src/components/Loading.vue
                         &lt;MdContent&gt; at src/components/MdContent/MdContent.vue
                           &lt;MdAppContent&gt; at src/components/MdApp/MdAppContent.vue
                             &lt;MdAppSideDrawer&gt; at src/components/MdApp/MdAppSideDrawer.vue
                               &lt;ComSidebarLayout&gt; at src/layouts/ComSideBar.vue
                                 &lt;App&gt; at src/App.vue
                                   &lt;Root&gt;
  </code></pre>
  <p>This error occurs when an option is selected in the select:</p>
  <pre><code>&lt;md-dialog :md-active.sync=&quot;showInserirDisciplina&quot;&gt;
              &lt;md-dialog-title&gt;&lt;md-icon&gt;article&lt;/md-icon&gt; Incluir Disciplina&lt;/md-dialog-title&gt;
              &lt;md-content&gt;
                  &lt;form novalidate class=&quot;md-layout&quot; style=&quot;min-width: 500px;&quot;&gt;
                      &lt;md-card class=&quot;md-layout-item md-size-100 md-small-size-100&quot;&gt;
                          &lt;md-card-content&gt;
                              &lt;md-field&gt;
                                  &lt;label for=&quot;disciplina&quot;&gt; Disciplina&lt;/label&gt;
                                  &lt;md-select v-model=&quot;disciplina&quot; name=&quot;disciplina&quot; id=&quot;disciplina&quot; @md-selected=&quot;carregaDisciplinasEquivalentes&quot; class=&quot;filtro&quot; style=&quot;color:#6361FB !important&quot;&gt;
                                      &lt;md-option :value=&quot;0&quot; &gt;&lt;/md-option&gt;
                                      &lt;md-option :value=&quot;c.codigoDisciplina&quot; v-for=&quot;c in dadosDisciplinas&quot;&gt;
                                          {{c.disciplina}}
                                      &lt;/md-option&gt;
                                  &lt;/md-select&gt;
                              &lt;/md-field&gt;
  </code></pre>
  <p>Please, someone can help me?</p>
  <p>Best regards for all reply,</p>