The NodeJS release schedule indicates that both Node 14 (2023-04-30) and Node 16 (2023-09-11) reach end-of-life this year. I filed issue 13720 in JupyterLab to upgrade its Node versions. If you’re still using Node 14 or 16, please consider upgrading to Node 18 as soon as possible, and file issues or submit pull requests (or both!) to get us up to date.