System Workbench for STM32

Hi,

In the debug config1 screenshot, in main tab, the C/C++ Application project should be an elf file, not a .project.
That's why the debug error message about "can't read symbols. file format not recognized..."

I don't know who put the .project there but it should not be.
Try to redo a debug config and check it is the .elf file there or browse to set it.

Rgds,
Laurent