- "name": terms[j].getElementsByTagName("name")[0].childNodes[0].nodeValue,
- "freq": terms[j].getElementsByTagName("frequency")[0].childNodes[0].nodeValue
+ "name": terms[j].getElementsByTagName("name")[0].childNodes[0].nodeValue || 'ERROR',
+ "freq": terms[j].getElementsByTagName("frequency")[0].childNodes[0].nodeValue || 'ERROR'