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
Could you check that you have the latest versions of the SW4STM32 installed (Help->Check for updates) ? Your issue looks like a path length problem we had in SW4STM32 and which has been fixed in 1.5.2 for IDE plugin.