Parsing error.... not well-formed - how to solve it?

Question

Parsing

A piece of the log - with a problematic place:

Blaupunkt Porto 170
JVC KD-X262
Nakamichi NQ711B Exception in thread 2:
Traceback (most recent call last):
File "/usr/lib/python3.4/threading.py", line 911, in _bootstrap_inner
self.run()
File " /usr/lib/python3.4/threading.py", line 859, in run
self._target(*self._args, **self._kwargs)
File "/var/www/users/USER/domains/FOLDER/oc_prs_mirzvuk /mirzvuk1/cron-45.py", line 147, in parser
xml_prettyxml = minidom.parseString(xml).toprettyxml()
File "/usr/lib/python3.4/xml/dom/minidom.py", line 1970, in parseString
return expatbuilder.parseString(string)
File "/usr/lib/python3.4/xml/dom/expatbuilder.py", line 925, in parseString
return builder.parseString(string)
File "/usr/lib/python3.4/xml/dom/expatbuilder.py", line 223, in parseString
parser.Parse(string, True)
xml.parsers.expat.ExpatError: not well -formed (invalid token): line 1, column 4112
Clarion CZ202EGRU
JVC KD-R889BT
Celsior CSW-186G

This is how an error appears in the log, the result is a missing bunch of goods. Those. he goes well and at some point, something bad - he writes like this, and then continues and everything is fine. What to do about it, and how to solve it?