We're trying to set up MQTT messaging between our custom nRF9160 device and our private AWS VPC. When using the Serial Terminal in nRF Connect for Desktop to monitor the device activity, we ger the following error message:
<err> nrf_cloud_transport: MQTT input error: -128
I can't find any documentation that gives further explanation for this error. Can you please help explain it or point us to documentation for this.
Thanks,
Jack