Traceback (most recent call last):


 "<input>", line 1, in <module>


 "...\dataclasses_json\mm.py", line 355, in dump

dumped.update(_handle_undefined_parameters_safe(cls=obj, kvs={},
AttributeError: 'list' object has no attribute 'update'

Traceback (most recent call last):


 "C:\Users\Aivar\AppData\Local\Programs\Thonny\lib\site-packages\thonny\plugins\birdseye_frontend.py", line 23, in start_server

port=get_workbench().get_option("run.birdseye_port"), debug=False, use_reloader=False


 "C:\Users\Aivar\AppData\Local\Programs\Thonny\lib\site-packages\flask\app.py", line 985, in run

cli.show_server_banner(self.env, self.debug, self.name, False)


 "C:\Users\Aivar\AppData\Local\Programs\Thonny\lib\site-packages\flask\cli.py", line 670, in show_server_banner

click.echo(message)


 "C:\Users\Aivar\AppData\Local\Programs\Thonny\lib\site-packages\click\utils.py", line 260, in echo

file.write(message)
AttributeError: 'NoneType' object has no attribute 'write'
