Error images for the 2016 epoch (left) and 2019 epoch (right) resulting conservatively from the addition of three possible sources of errors discussed in Appendix B. The errors are expressed in terms of the original image flux. Here and hereafter, the 3D-RHD-model-related images have been convolved with a 0.6 mas beam, that is, our best estimate of the real resolution obtained (see Appendix B.3).