Px4 Pixhawk Autopilot Debug

I wanted to debut px4 pixhawk autopilot firmware on my stm32cubeide.
I compile code by cmd “make px4_fmv-u5_debug” on terminal
I set debug environment and select .elf file.
after debug i am getting (Break at address “0x800147c” with no debug information available, or outside of program code) error.

Please help me to debug px4 autopilot firmware.

Could it be that a signal is handled in the bootloader and therefore the source is not found? What happens if you do continue from there?

Breaking again at the same address