ValueError: Infered arg_value type is not supported

[craigvear]

sending the following floats to be individually parsed by send_message but get this error message (0.5938088 0.21404406 0.06094052 0.5298297 0.05217947 0.6697440937739355 0.005217947065830231 0.04091830836684529 0.5938088 0.05217947):

  Exception in thread Thread-5:
  Traceback (most recent call last):
    File "/usr/local/Caskroom/miniconda/base/envs/monks_mood/lib/python3.7/threading.py", line 926, in _bootstrap_inner
      self.run()
    File "/usr/local/Caskroom/miniconda/base/envs/monks_mood/lib/python3.7/threading.py", line 870, in run
      self._target(*self._args, **self._kwargs)
    File "/Users/craigvear/PycharmProjects/retroDemoMusic/controller.py", line 125, in robot_sax
      self.make_sound('sax', raw_data_from_dict, rhythm_rate)
    File "/Users/craigvear/PycharmProjects/retroDemoMusic/controller.py", line 188, in make_sound
      self.kyma_client.send_message("/vcs/Amp1/1", amp1)  # Send float message
    File "/usr/local/Caskroom/miniconda/base/envs/monks_mood/lib/python3.7/site-packages/pythonosc/udp_client.py", line 73, in send_message
      builder.add_arg(val)
    File "/usr/local/Caskroom/miniconda/base/envs/monks_mood/lib/python3.7/site-packages/pythonosc/osc_message_builder.py", line 83, in add_arg
      arg_type = self._get_arg_type(arg_value)
    File "/usr/local/Caskroom/miniconda/base/envs/monks_mood/lib/python3.7/site-packages/pythonosc/osc_message_builder.py", line 122, in _get_arg_type
      raise ValueError('Infered arg_value type is not supported')
  ValueError: Infered arg_value type is not supported

Only happens occasionally, and the values are always floats.