add_loopback_full.py lxml.etree.XMLSyntaxError

[foehn2002]

When execute add_loopback_full.py

Traceback (most recent call last):
File "./add_loopback_full.py", line 99, in
sys.exit(main())
File "./add_loopback_full.py", line 93, in main
netconf_response = m.edit_config(target='running', config=new_ip)
File "/usr/local/lib/python3.6/dist-packages/ncclient/manager.py", line 231, in execute
huge_tree=self.huge_tree).request(*args, **kwds)
File "/usr/local/lib/python3.6/dist-packages/ncclient/operations/edit.py", line 65, in request
node.append(validated_element(config, ("config", qualify("config"))))
File "/usr/local/lib/python3.6/dist-packages/ncclient/xml.py", line 145, in validated_element
ele = to_ele(x)
File "/usr/local/lib/python3.6/dist-packages/ncclient/xml_.py", line 124, in to_ele
return x if etree.iselement(x) else etree.fromstring(x.encode('UTF-8'), parser=_get_parser(huge_tree))
File "src/lxml/etree.pyx", line 3237, in lxml.etree.fromstring
File "src/lxml/parser.pxi", line 1896, in lxml.etree._parseMemoryDocument
File "src/lxml/parser.pxi", line 1784, in lxml.etree._parseDoc
File "src/lxml/parser.pxi", line 1141, in lxml.etree._BaseParser._parseDoc
File "src/lxml/parser.pxi", line 615, in lxml.etree._ParserContext._handleParseResultDoc
File "src/lxml/parser.pxi", line 725, in lxml.etree._handleParseResult
File "src/lxml/parser.pxi", line 654, in lxml.etree._raiseParseError
File "", line 7
lxml.etree.XMLSyntaxError: Opening and ending tag mismatch: adminSt line 7 and up, line 7, column 33

Code:
up
should be
up

[foehn2002]

<adminSt>up</up>
should be
<adminSt>up</adminSt>