e</string> </value>         </item>         <item>             <key> <string>message_values</string> </key>             <value>               <dictionary>                 <item>                     <key> <string>external_validator_failed</string> </key>                     <value> <string>The input failed the external validator.</string> </value>                 </item>                 <item>                     <key> <string>required