The documentation generated with 'make WebDoc' is now a git repo at https://github.com/FreeCAD/SourceDoc and can be read online via https://freecad.github.io/SourceDoc/ - The page at https://freecadweb.org/api now redirects to it.
The documentation generated with 'make WebDoc' is now a git repo at https://github.com/FreeCAD/SourceDoc and can be read online via https://freecad.github.io/SourceDoc/ - The page at https://freecadweb.org/api now redirects to it.