The goal of this tutorial is to export a low resolution mesh and cameras to MeshLab so we can generate a texture for the mesh. For convenience, I provide a mapping session, but you can try it with ...

which platform are you using (say it also on the subject of the issue) which version of meshlab are you using (e.g. 2020.09 portable. 2020.06 snap, 2020.12 installer) be sure that the issue is ...