The versioned developer documentation for ParaView has been moved to https://www.paraview.org/paraview-docs. Please update your links and bookmarks to this new site.
The developer documentation for all versions of ParaView requires enough disk space that it outgrew the free hosting limits on kitware.github.io.
If you go to the old site’s main page you will be redirected to the new site. However, links to specific pages on the old site will not be forwarded to their counterparts on the new site.