NessusParser.parse_fromfile error

Traceback (most recent call last):
File "./es.py", line 29, in
nessus_obj_list = NessusParser.parse_fromfile(file)
File "/usr/local/lib/python2.7/dist-packages/libnessus/parser.py", line 117, in parse_fromfile
rval = cls.parse(fdata, data_type)
File "/usr/local/lib/python2.7/dist-packages/libnessus/parser.py", line 16, in parse
nessusobj = cls._parse_xml(nessus_data)
File "/usr/local/lib/python2.7/dist-packages/libnessus/parser.py", line 33, in _parse_xml
nessusobj = cls._parse_xmlv2(root)
File "/usr/local/lib/python2.7/dist-packages/libnessus/parser.py", line 55, in _parse_xmlv2
_nhost = cls.parse_host(nessus_host)
File "/usr/local/lib/python2.7/dist-packages/libnessus/parser.py", line 79, in parse_host
return NessusReportHost(_dhp, _vuln_list)
File "/usr/local/lib/python2.7/dist-packages/libnessus/objects/reporthost.py", line 25, in init
"Missing: ".format(" ".join(_missing_attr)))
Exception: Not all the attributes to create a decent NessusReportHost are available. Missing:

it happens always when the file .nessus is around or greater than 30M