Development tools for Zephyr on STM32Workbench for Zephyr: VS Code extension to set up, build, flash and debug Zephyr applications on STM32.Devicetree manager: browse, edit and visualize Zephyr devicetree, STM32CubeMX-like for Zephyr.
You may have the wrong version of Java.
The version of Java required (I can't remember now) may not be available for your machine
This was a deciding factor in upgrading my xp laptop.