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.
I have the same error.
The IDE raises this error as soon as I press the "Open console on serial device" button from the toolbar, as it is described in the wiki.