NET::ERR_CERT_AUTHORITY_INVALID

How to solve this error?

  less than a minute  

Open your browser and fill in [controller_IP_address], for example 192.168.2.100.

This returns the following error:

image not found

You did not install the motorcortex.cert.crt correctly, please perform the steps Install a Browser Certificate.

If installed check the steps in Testing the Certificate.