Can't get Deadline shelf to load in Maya 2019 on a Mac

Hi–I have loaded Deadline on my Mac, and I was trying to get the deadline shelf to load in Maya 2019. I get this error whenever I try to run the DeadlineMayaClient.mel script inside of the script editor. It says:

warning( “The SubmitMayaToDeadline.mel script could not be found in the Deadline Repository. Please make sure that the Deadline Client has been installed on this machine, that the Deadline Client bin folder is set in the DEADLINE_PATH environment variable, and that the Deadline Client has been configured to point to a valid Repository.” );
}

I’m new to all this, so any help would be much appreciated.
David Mattingly