STM32H7B3I-DK: No source available for "<signal handler called>() at 0xfffffffe" while debugging

[RLalj.1]

Hi,

I'm attempting to debug the example code (LedToggling) generated from CubeMX, but it's showing an error as described in the image below. The board was working fine before, but suddenly, I'm encountering this issue. 

Although I can connect through the built-in ST link to CubeProgrammer and perform a full chip erase, the problem only arises during debugging.

How can I fix this ?

Thank You

[RLalj.1]

I've test with another discovery kit STM32H7B3I-DK, but it also fails to debug the code and return below error for same example code.

[Imen.D]

Hello @RLalj.1,

This can happen when the CPU double-hardfaults.

Maybe you have the same issue reported in this post: CUBE IDE No source available for "<signal handler ... - STMicroelectronics Community.