how to make west flash work on STM32L496AGI6 and ST-LINK/V2

[glin00]

I would like to use west flash and west debug commands on my Zephyr project. But I get these error message(see attached file) using west flash and debug.

The following is my software configuration.
Linux Ubuntu 20.04.3 LTS
Zephyr SDK,-0.13.0
Zephyr SHA1 ID:bb85a55

My hardware configuration.
STM32L496AGI6
ST-LINK/V2

I had tested my hardware configuration using STM32CubeProgrammer and I can flash the generated zephyr.bin file using this hardware .

The attached file also include my openocd.cfg.

Can anyone help to advise how to solve this problem?

Thanks.
openocd_westflash_debug.zip

[glin00]

For west flash command, if I touch the NRST pin of mcu to ground before west flash is running and release NRST from ground in the mid of executing west flash, the west flash can proceed without errors(see attached). However, using the same way, touching NRST to ground then release it, I still can not make west debug to work(see attached).
Can anyone give some suggestions
11242021.zip
?