The Defenders mission check fails with TypeError

Hi there,

When I am trying to check my solution for "The Defenders" mission I am getting the following error:

run_data = echo_send_recv_json(globals()['do_' + run_data['do']](run_data)),
File "/opt/project/runners/py3.py", line 377, in do_sys,
sys.stderr.write(str_traceback(e, *sys.exc_info())),
File "/opt/project/runners/py3.py", line 191, in str_traceback,
return str_frames(ex, filename, get_traceback_frames(filename, *args)),
TypeError: get_traceback_frames() missing 1 required positional argument: 'tb',

Looks like a server error, could someone check it?

Thank you!