# Pastebin UsmPgI3f
2023-02-13 13:32:56,391 listenbrainz.webserver ERROR    Exception on /1/playlist/e88845c0-c820-4f9f-a432-3f9e3555fc0d/xspf [GET]
Traceback (most recent call last):
  File "/usr/local/lib/python3.11/xml/etree/ElementTree.py", line 1028, in _escape_cdata
    if "&" in text:
       ^^^^^^^^^^^
TypeError: argument of type 'bool' is not iterable

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/usr/local/lib/python3.11/site-packages/flask/app.py", line 2073, in wsgi_app
    response = self.full_dispatch_request()
               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.11/site-packages/flask/app.py", line 1519, in full_dispatch_request
    rv = self.handle_user_exception(e)
         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.11/site-packages/flask/app.py", line 1517, in full_dispatch_request
    rv = self.dispatch_request()
         ^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.11/site-packages/flask/app.py", line 1503, in dispatch_request
    return self.ensure_sync(self.view_functions[rule.endpoint])(**req.view_args)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/code/listenbrainz/listenbrainz/webserver/decorators.py", line 18, in decorator
    resp = make_response(f(*args, **kwargs))
                         ^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.11/site-packages/brainzutils/ratelimit.py", line 262, in rate_limited
    return f(*args, **kwargs)
           ^^^^^^^^^^^^^^^^^^
  File "/code/listenbrainz/listenbrainz/webserver/decorators.py", line 42, in decorator
    return func(*args, **kwargs)
           ^^^^^^^^^^^^^^^^^^^^^
  File "/code/listenbrainz/listenbrainz/webserver/views/playlist_api.py", line 602, in get_playlist_xspf
    return serialize_xspf(playlist)
           ^^^^^^^^^^^^^^^^^^^^^^^^
  File "/code/listenbrainz/listenbrainz/webserver/views/playlist_api.py", line 260, in serialize_xspf
    return ET.tostring(playlist_root, encoding="unicode", method="xml")
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.11/xml/etree/ElementTree.py", line 1098, in tostring
    ElementTree(element).write(stream, encoding,
  File "/usr/local/lib/python3.11/xml/etree/ElementTree.py", line 743, in write
    serialize(write, self._root, qnames, namespaces,
  File "/usr/local/lib/python3.11/xml/etree/ElementTree.py", line 906, in _serialize_xml
    _serialize_xml(write, e, qnames, None,
  File "/usr/local/lib/python3.11/xml/etree/ElementTree.py", line 906, in _serialize_xml
    _serialize_xml(write, e, qnames, None,
  File "/usr/local/lib/python3.11/xml/etree/ElementTree.py", line 904, in _serialize_xml
    write(_escape_cdata(text))
          ^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.11/xml/etree/ElementTree.py", line 1036, in _escape_cdata
    _raise_serialization_error(text)
  File "/usr/local/lib/python3.11/xml/etree/ElementTree.py", line 1018, in _raise_serialization_error
    raise TypeError(
TypeError: cannot serialize True (type bool)