Hello,
Thank you for reaching out.
Could you please provide a screenshot of your RMS Remote VNC connection configuration? Also, have you tried specifying a username and password when selecting Network Level Authentication in the remote connect VNC settings?
Additionally, please share a screenshot of the error message you receive when the Guacamole client stops.
As I understand, Guacamole in RMS functions as a VNC client, meaning it connects to devices that have a VNC server enabled. Could you please clarify whether you are using the RMS Remote Access link with the Guacamole VNC client to connect to your Mac mini device?
Best regards,