Callback InitFcn error for AudioWriter.

Error evaluating 'InitFcn' callback of Audio Device Writer block (mask) 'dspUDPVoip/Audio Device Writer'.

Callback string is 'audioblkAudioDeviceIO(gcbh, 'initfcn');'

Caused by:

group dsp does not exist

MEanwhile this model is not created by me, I simply ran the code as mentioned in this link.

This works completely fine on windows 10, however not working on Linux.

My configuration:

OS: - Ubuntu 18.04

Matlab: r2018b