title: How to prevent TypeError on v-text-field enter key up
body: <p>I have the following Vuetify form with single v-text-field and a button:</p>
  
  <pre><code>&lt;v-form v-model="valid" ref="form" @submit.prevent&gt;
        &lt;v-container&gt;
          &lt;v-layout&gt;
            &lt;v-flex
              xs12
              md8
            &gt;
              &lt;v-text-field
                v-model="name"
                :rules="nameRules"
                :counter="max"
                maxlength='max'
                :label="$t('Save new name')"
                required
                clearable
                @keyup.enter.prevent='onEnterPressed'
              &gt;&lt;/v-text-field&gt;
            &lt;/v-flex&gt;
  
            &lt;v-flex
              xs12
              md4
            &gt;
              &lt;v-btn
                :loading="saving"
                :disabled="!valid || saving"
                color="info"
                @click="processNewName"
              &gt;
                &lt;v-icon left dark&gt;fa-save&lt;/v-icon&gt;
                {{ $t('Save') }}
              &lt;/v-btn&gt;
            &lt;/v-flex&gt;
          &lt;/v-layout&gt;
        &lt;/v-container&gt;
      &lt;/v-form&gt;
  </code></pre>
  
  <p>Currently these are my methods:</p>
  
  <pre><code>onEnterPressed() {
    console.log('enter pressed');
  },
  processNewName() {
    ...
  }
  </code></pre>
  
  <p>I'm using <code>@submit.prevent</code> to stop refreshing the page when the Enter button is hit.</p>
  
  <p>So far everything seems to be working. However, when I hit the enter button, in the console I'm getting this error message:</p>
  
  <pre><code>Uncaught TypeError: Cannot read property 'type' of undefined
  at e.setFieldValue (onloadwff.js:71)
  at HTMLFormElement.formKeydownListener (onloadwff.js:71)
  </code></pre>
  
  <p>In onloadwff.js the error points to the following code:</p>
  
  <pre><code>if("password"===r.type)
  </code></pre>
  
  <p>So <code>r</code> is undefined. How can I prevent this from happening? I already tried to use <code>@keyup.enter.prevent.native</code>, tried <code>@keydown.enter.prevent</code>, tried to point <code>@submit.prevent</code> to <code>processNewName</code> method... This error keeps showing up.</p>
  
  <p>I checked in Vuetify site the v-text-field component, and it seems that sometimes they also get this error in some of their examples, but not all of them. But I can't figure out what to do to prevent this from happening. Any ideas?</p>
  
  <p><strong>EDIT</strong></p>
  
  <p>Upon further investigation I fount out that <code>onloadwff.js</code> belongs to LastPass plugin. Checked in different browser without that plugin and saw everything works just fine.</p>