================================================================================================================================================== FAILURES ==================================================================================================================================================
E           tornado.httpclient.HTTPClientError: HTTP 500: Internal Server Error
tests/test_notebookapp.py:76: HTTPClientError
ERROR    ServerApp:web.py:1934 Uncaught exception GET /a%40b/terminals/1 (127.0.0.1)
    raise OSError('out of pty devices')
OSError: out of pty devices
FAILED tests/test_notebookapp.py::test_terminal_handler - tornado.httpclient.HTTPClientError: HTTP 500: Internal Server Error
>>> ERROR: jupyter-nbclassic: check failed