I only see one reason, my best bet would be that you simply forgot to enable the motors during your last upload. The Arduino reports what is configured and currently it says that no motors are configured.
INFO - Found one device on COM8 named {
"ConnectedModel": "g",
"Features": "MLGNJP",
"ModulesCount": 0,
"SimpleModuleCount": 0,
"RGBLedsCount": 0,
"AdditionalButtonsCount": 7,
"CurrentBaudRate": 0,
"DeviceName": "ACHUB_LCD_I2C",
"GLCDCount": 0,
"OLEDCount": 0,
"MotorsCount": 0,
"PortName": "COM8",
"RefreshPerSecond": 0.0,
"RotaryEncodersCount": 0,
"IsLeonardo": false
}