ERROR:xmpp:Stream Error: internal-server-error "integer out of range for 'L' format code"

[asyncmind0]

ERROR:xmpp:Stream Error: internal-server-error "integer out of range for 'L' format code"
Traceback (most recent call last):
File "/home/steven/.local/lib/python2.7/site-packages/python_xmpp_server-0.1.1-py2.7.egg/xmpp/core.py", line 341, in _read
self.parser.feed(data)
File "/home/steven/.local/lib/python2.7/site-packages/python_xmpp_server-0.1.1-py2.7.egg/xmpp/xml.py", line 91, in feed_tokens
self.parser.feed(token)
File "parser.pxi", line 1177, in lxml.etree._FeedParser.feed (src/lxml/lxml.etree.c:90439)
File "parsertarget.pxi", line 142, in lxml.etree._TargetParserContext._handleParseResult (src/lxml/lxml.etree.c:99923)
File "parsertarget.pxi", line 130, in lxml.etree._TargetParserContext._handleParseResult (src/lxml/lxml.etree.c:99746)
File "lxml.etree.pyx", line 291, in lxml.etree._ExceptionContext._raise_if_stored (src/lxml/lxml.etree.c:9384)
File "saxparser.pxi", line 217, in lxml.etree._handleSaxEnd (src/lxml/lxml.etree.c:95538)
File "parsertarget.pxi", line 80, in lxml.etree._PythonSaxParserTarget._handleSaxEnd (src/lxml/lxml.etree.c:99179)
File "/home/steven/.local/lib/python2.7/site-packages/python_xmpp_server-0.1.1-py2.7.egg/xmpp/xmppstream.py", line 120, in end
self.core.handle_stanza(elem)
File "/home/steven/.local/lib/python2.7/site-packages/python_xmpp_server-0.1.1-py2.7.egg/xmpp/core.py", line 432, in handle_stanza
self.state.trigger_stanza(elem.tag, elem)
File "/home/steven/.local/lib/python2.7/site-packages/python_xmpp_server-0.1.1-py2.7.egg/xmpp/state.py", line 122, in trigger_stanza
return self.run(handler, _args, *_kwargs)
File "/home/steven/.local/lib/python2.7/site-packages/python_xmpp_server-0.1.1-py2.7.egg/xmpp/state.py", line 150, in run
method(_args, *_kwargs)
File "/home/steven/.local/lib/python2.7/site-packages/python_xmpp_server-0.1.1-py2.7.egg/xmpp/features.py", line 112, in begin
state = Mech(self.auth).challenge()
File "/home/steven/.local/lib/python2.7/site-packages/sasl/digest_md5.py", line 34, in challenge
'nonce': self.make_nonce(),
File "/home/steven/.local/lib/python2.7/site-packages/sasl/digest_md5.py", line 197, in make_nonce
return base64.b64encode(''.join(struct.pack('L', value)))
error: integer out of range for 'L' format code