V3.9.0 Breaks debugger
I've seen the other post, but my issue is different. I'm now getting:

Rolling back doesn't seem to be fixing this issue, even though nothing about my setup has changed since 2 weeks ago.
I can't even figure out if it's the update causing this issue thanks to this utterly useless update information:
Breaking Changes
- Complete architecture redesign: The tool architecture has been split into three major building blocks with the purpose of creating a flexible, maintainable and updatable platform consisting of the following blocks: GUI, CLI tools and STM32 device support.
What changed?!
How am I supposed to update my 3.8 configs to 3.9?