1. An automotive milling machine comprising: a machine frame; a working drum supported from the machine frame for milling off milled material; a transport conveyor arranged to receive the milled material milled off by the working drum and to discharge the milled material onto a loading surface of a transport vehicle, the transport conveyor being slewable relative to the machine frame; an image recording system arranged to monitor an alterable position of the loading surface of the transport vehicle, via at least one sensor configured to generate at least one digital image of the loading surface; and a controller configured to detect an error in the at least one digital image.