ParseError: not well-formed (invalid token)

[JIVeer]

Hi, I am getting following error:

ERROR: EXCEPTION Thrown (PythonToCppException) : -->Python callback/script returned the following error<--
                                             - NOTE: IGNORING THIS CAN LEAD TO MEMORY LEAKS!
                                            Error Type: <class 'xml.etree.ElementTree.ParseError'>
                                            Error Contents: not well-formed (invalid token): line 5, column 16
                                            Traceback (most recent call last):
                                              File "/home/jiv/.kodi/addons/script.100fm/addon.py", line 28, in <module>
                                                song = api.get_current_song(player_window.getProperty('current'))
                                              File "/home/jiv/.kodi/addons/script.100fm/api.py", line 54, in get_current_song
                                                root = ET.fromstring(xml.encode('utf-8'))
                                              File "/usr/lib/python2.7/xml/etree/ElementTree.py", line 1311, in XML
                                                parser.feed(text)
                                              File "/usr/lib/python2.7/xml/etree/ElementTree.py", line 1653, in feed
                                                self._raiseerror(v)
                                              File "/usr/lib/python2.7/xml/etree/ElementTree.py", line 1517, in _raiseerror
                                                raise err
                                            ParseError: not well-formed (invalid token): line 5, column 16
                                            -->End of Python script error report<--

whats wrong?
Kodi (17.6 Git:20171114-a9a7a20). Platform: Linux x86 64-bit