I attempted to use the vale-vscode extension (0.30.0) with VSCode on an Ubuntu 22.04.5 LTS desktop.
It looks like there are issues running the Vale Language Server.
I've attached the error log when VSCode starts up (after installing the extension and restarting VSCode): error log when starting VSCode on an Ubuntu 22.04.5 desktop
One solution may be to update my desktop to a later version. I will report if it is still an issue when do this.
Note: I tested on Windows 10 and it worked fine without any issues (fresh VSCode installation, the latest vale, and version 0.30.0 of the extension).