Thanks for your reply. The option in debugger setting "Type: Software system reset/ connect under reset/ non" is disappeared when I select the ST-Link (Open OCD) option.But now I am getting this problem-->Error in final launch sequence:Failed to exec...

I have done as you mentioned above. After that I am getting another type of error -->Error in final launch sequence:Failed to execute MI command:load C:\\Users\\Acer\\Downloads\\Embedde-C\\My_workspace\\Target\\LED_Blink\\Debug\\LED_Blink.elf Error m...