title: Vue.js warning Invalid prop: type check failed for prop "xxxx" Expected Object, got String
body: <p>Even if this prop got a warning , it's running fine ... but WHY this warning on prop locale ?</p>
  
  <pre><code>  [Vue warn]: Invalid prop: type check failed for prop "locale". Expected Object, got String.
  
    &lt;PayPal v-show="displayPaypalButtons" :buttonStyle="bStyle" locale="fr_FR" :client="credentials" amount="50.00" currency="EUR" env="sandbox" :invoice-number="invoiceNumber"&gt;&lt;/PayPal&gt;
  </code></pre>