SITL matlab script won't arm

Try to run Matlab script

Using default copter.param
Term 1: roscore
Term 2: Matlab; SIM_multicopter.m
Term 3: hostname -I
Output xxx.xx.xxx.xx yyy.yy.y.y
sim_vehicle.py -v ArduCopter -f JSON:xxx.xx.xxx.xx --map --console

Matlab command window shows 1200 fps
ArduCopter terminal shows JSON control interface set to xxx.xx.xxx.xx:9002

Console has red text
AP:PreArm: Motors: Check frame class and type

Term 3 has WARNING: no config file for. Frame (JSON:xxx.xx.xxx.xx)

arm throttle doesn’t seem to work

How to debug / correct.

Set the frame class and type parameters.