Error during debug on STM8 controller using ST-LINK tool

[vkuma.21]

Hello everyone,

I am trying to debug STM8 using ST-LINK USB tool, but facing error while debugging. Due to that I am unable to debug.

Micro controller and hardware is perfectly OK, because I am trying in those hardware in which it was previously working.

Error I am facing is attached as an image file. Kindly check and suggest some troubleshooting method.