The log says:

[2017-11-20T13:58:02.175 CST INFO ][           org.kde.kstars.indi] - MoonLite :  "[INFO] Error retreiving data from MoonLite, please ensure MoonLite controller is powered and the port is correct. "
[...]
[2017-11-20T13:58:07.455 CST DEBG ][           org.kde.kstars.indi] - MoonLite : "[DEBUG] Connecting to /dev/cu.wchusbserial1410 "
[2017-11-20T13:58:07.457 CST INFO ][           org.kde.kstars.indi] - MoonLite :  "[ERROR] Failed to connect to port (/dev/cu.wchusbserial1410). Error: Port failure Error: Resource busy. Check if device is connected to this port. "
[...]
[2017-11-20T13:58:07.455 CST DEBG ][           org.kde.kstars.indi] - MoonLite : "[DEBUG] Connecting to /dev/cu.wchusbserial1410 "
[2017-11-20T13:58:07.457 CST INFO ][           org.kde.kstars.indi] - MoonLite :  "[ERROR] Failed to connect to port (/dev/cu.wchusbserial1410). Error: Port failure Error: Resource busy. Check if device is connected to this port. "

I think something else opened the serial port before the indi driver, have you disconnected the arduino serial monitor before starting indi/kstars?

Riccardo

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