unknown msg_type: comm_open [HA version 2022.8.7, integration v.1.3.3]

[tms320]

I have installed "HASS Pyscript kernel shim for Jupyter" on my Windows client machine. If I create new hass pyscript in web interface: I see the following error(s) in the HA logs: What does it mean? PS: I am new with Python & Jupyter