Zephyr Workbench, a VSCode extension to manage Zephyr on STM32.
It enables users to easily create, develop, and debug Zephyr applications.
Main features:
Install host dependencies.
Import toolchain and SDK.
Create, configure, build and manage apps.
Debug STM32.
You can directly download it from the VSCode marketplace
For more details, visit the Zephyr Workbench
Didn’t find an actual cause. Uninstalled SW4STM32 in Eclipse plugins installer and removed all fr.ac6* folders and files + artifacts.xml in Eclipse folder . Then installed again and problem gone.