I followed this tutorial to add an example secure partition in TF-M ( https://tf-m-user-guide.trustedfirmware.org/integration_guide/services/tfm_secure_partition_addition.html ) and then followed these instructions to flash the application to my Nucleo-L552ZE-Q board ( https://tf-m-user-guide.trustedfirmware.org/platform/stm/common/stm32l5xx/readme.html ). However, the script regression.sh returned the error:

If you are trying to connect to a device which supports Debug Authentication with certificate or password, please open your device using it.

After this, I am unable to connect my board STM32Cube Programmer or to flash any application using Keil MDK ARM, CubeIDE, etc. The same error is returned every time. Before I runned the regression.sh script, the board was working as expected and I was able to flash simple applications (non using TF-M) to the board. I've already tried to connect the board to the STM32Cube Programmer using the Hot Plug mode - (i) pulled BOOT0 pin to HIGH, (ii) connected the board to the PC, (iii) selected Hot Plug mode in STM32Cube Programmer and Hit Connect - but did not work. I get this log: