Cognitive Services TranslateArray error

error_response.html

<html:html xmlns:html="http://www.w3.org/1999/xhtml" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" version="-//W3C//DTD XHTML 2.0//EN" xsi:schemaLocation="http://www.w3.org/1999/xhtml http://www.w3.org/MarkUp/SCHEMA/xhtml2.xsd" xml:lang="en">
   <html:HEAD>
      <html:TITLE>Request Error</html:TITLE>
   </html:HEAD>
   <html:BODY>
      <html:DIV id="content">
         <html:P class="heading1">
            <html:B>Error Status Code:</html:B>
            'InternalServerError'
         </html:P>
         <html:P>
            <html:B>Details: </html:B>
            The server encountered an error processing the request. Please see the server logs for more details.
         </html:P>
      </html:DIV>
   </html:BODY>
</html:html>