Did anyone encounter this error when trying to run gdb with the example progams written in this article? The error: "Unable to find Mach task port for process-

Did anyone encounter this error when trying to run gdb with the example progams written in this article? The error: "Unable to find Mach task port for process-id 13942: (os/kern) failure (0x5). (please check gdb is codesigned - see taskgated(8))"