Results 2 issues of mxlong

The project can complied completely, but when I run this "gazebo-arm.sh" or "gazebo-rover.sh" in the command line, it got errors. When I run "gazebo-arm.sh", it print the error bellow. And...

If notify_one() of the condition variable has been called before the function wait(), wait() blocks the connection until the next connection is established. So you get an socket connect Error....