I have validated the GML data in the CityDoctor. It found the error "GE_P_NON_PLANAR_POLYGON_DISTANCE_PLANE" in nearly all of the buildings. Is there a way to fix such an error?
I tried to access CityDoctor's healing module. However, the module is still in development.
The error and the healing are described in the link: https://gitlab.com/volkercoors/CiD4Sim/-/wikis/healing/GE_P_NON_PLANAR_POLYGON_DISTANCE_PLANE