System Workbench for STM32

Debug mode fails !

Hello guys please help with this error : I cant make it work in Debug mode. I made it on another computer, but not in mine. With the computer that doesnt work, I did an automatic check for updates from the help menu. Still the issue present :

Error in final launch sequence
Failed to execute MI command:
-target-select remote localhost:3333

Error message from debugger back end:
Remote communication error. Target disconnected.: No error.