Problem in Debug

In Dev studio 2.5.1 i set the debug configuration as i set debugger->connection->serial-> 115200-> apply->debug -> and it shown some error as error in shutting down debugger launch org.eclipse.cdt.dsf.gdb.Lauching.Gdblaunch@15dcc89
i attached screen shot also

can anyone face this issue
how to solve this issue

does anyone awre about this problem? I posted 3 days before but still i didn’t get any replies