Break at address "0x1fffca82" with no debug information available

Hi all...

I'm Matteo from Italy.

I am working with STM32F072 MCU.

Developed my software with STM32F072-EVAL demo board and it works fine (using the on-board STLINK)

Now i am try to debug the same program on my PCB (developed with the same pinout of demoboard) and i getting throubles with debugger (STLINK-V3).

When i press F8 to run the program, i get alwais the Break at address "0x1fffca82" with no debug information available" error.

Just for test I clear the main function as simple as:

HAL_GPIO_WritePin(EXP_OUT1_GPIO_Port, EXP_OUT1_Pin, GPIO_PIN_RESET);
HAL_Delay(10);
HAL_GPIO_WritePin(EXP_OUT1_GPIO_Port, EXP_OUT1_Pin, GPIO_PIN_SET);

well, i found that the error occours in the " HAL_Delay(10); " call.

If I remove the delay function i can debug the set and reset pin (working fine) with step debuf (F6), but when i press F8 i get the same error.

I am using internal HSI48 clock source.

Hereafter the clock configuration:

Thank you for help me !