MQTT Client - TypeError: can't subtract offset-naive and offset-aware datetimes

[semuadmin]

pyspartn Bug Report Template

TypeError: can't subtract offset-naive and offset-aware datetimes when processing basedates without timezone information.

Exception in thread paho-mqtt-client-<<redacted>>:
Traceback (most recent call last):
  File "/Library/Frameworks/Python.framework/Versions/3.12/lib/python3.12/threading.py", line 1073, in _bootstrap_inner
    self.run()
  File "/Library/Frameworks/Python.framework/Versions/3.12/lib/python3.12/threading.py", line 1010, in run
    self._target(*self._args, **self._kwargs)
  File "/Users/steve/Library/Python/3.12/lib/python/site-packages/paho/mqtt/client.py", line 4523, in _thread_main
    self.loop_forever(retry_first_connection=True)
  File "/Users/steve/Library/Python/3.12/lib/python/site-packages/paho/mqtt/client.py", line 2297, in loop_forever
    rc = self._loop(timeout)
         ^^^^^^^^^^^^^^^^^^^
  File "/Users/steve/Library/Python/3.12/lib/python/site-packages/paho/mqtt/client.py", line 1686, in _loop
    rc = self.loop_read()
         ^^^^^^^^^^^^^^^^
  File "/Users/steve/Library/Python/3.12/lib/python/site-packages/paho/mqtt/client.py", line 2100, in loop_read
    rc = self._packet_read()
         ^^^^^^^^^^^^^^^^^^^
  File "/Users/steve/Library/Python/3.12/lib/python/site-packages/paho/mqtt/client.py", line 3142, in _packet_read
    rc = self._packet_handle()
         ^^^^^^^^^^^^^^^^^^^^^
  File "/Users/steve/Library/Python/3.12/lib/python/site-packages/paho/mqtt/client.py", line 3808, in _packet_handle
    return self._handle_publish()
           ^^^^^^^^^^^^^^^^^^^^^^
  File "/Users/steve/Library/Python/3.12/lib/python/site-packages/paho/mqtt/client.py", line 4145, in _handle_publish
    self._handle_on_message(message)
  File "/Users/steve/Library/Python/3.12/lib/python/site-packages/paho/mqtt/client.py", line 4501, in _handle_on_message
    on_message(self, self._userdata, message)
  File "/Users/steve/Library/Python/3.12/lib/python/site-packages/pygnssutils/gnssmqttclient.py", line 411, in on_message
    for raw, parsed in spr:
  File "/Users/steve/Library/Python/3.12/lib/python/site-packages/pyspartn/spartnreader.py", line 135, in __next__
    (raw_data, parsed_data) = self.read()
                              ^^^^^^^^^^^
  File "/Users/steve/Library/Python/3.12/lib/python/site-packages/pyspartn/spartnreader.py", line 165, in read
    (raw_data, parsed_data) = self._parse_spartn(byte1)
                              ^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/Users/steve/Library/Python/3.12/lib/python/site-packages/pyspartn/spartnreader.py", line 251, in _parse_spartn
    parsed_data = self.parse(
                  ^^^^^^^^^^^
  File "/Users/steve/Library/Python/3.12/lib/python/site-packages/pyspartn/spartnreader.py", line 328, in parse
    return SPARTNMessage(
           ^^^^^^^^^^^^^^
  File "/Users/steve/Library/Python/3.12/lib/python/site-packages/pyspartn/spartnmessage.py", line 98, in __init__
    self._do_attributes()
  File "/Users/steve/Library/Python/3.12/lib/python/site-packages/pyspartn/spartnmessage.py", line 167, in _do_attributes
    iv = self._get_iv()
         ^^^^^^^^^^^^^^
  File "/Users/steve/Library/Python/3.12/lib/python/site-packages/pyspartn/spartnmessage.py", line 203, in _get_iv
    timeTag = convert_timetag(self.gnssTimeTag, self._basedate)
              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/Users/steve/Library/Python/3.12/lib/python/site-packages/pyspartn/spartnhelpers.py", line 282, in convert_timetag
    basedate_seconds = date2timetag(basedate)
                       ^^^^^^^^^^^^^^^^^^^^^^
  File "/Users/steve/Library/Python/3.12/lib/python/site-packages/pyspartn/spartnhelpers.py", line 245, in date2timetag
    return int((date - TIMEBASE).total_seconds())
                ~~~~~^~~~~~~~~~
TypeError: can't subtract offset-naive and offset-aware datetimes

To Reproduce

Steps to reproduce the behaviour:

1. Run spartn_mqtt_client.py example with decryption enabled.

Expected Behaviour

• No error.

Desktop (please complete the following information):

• All platforms.

SPARTN data source (please complete the following information as best you can):

• Thingstream PointPerfect MQTT 100H

(NB: Please redact any current SPARTN decryption keys)

Additional context

Add any other context about the problem here.