Devhelp index file format warning
(devhelp:8932): devhelp-WARNING **: 13:39:23.282: The file 'file:///usr/share/gtk-doc/html/libxml2/libxml2.devhelp' uses the Devhelp index file format version 1, which is deprecated. A future version of Devhelp may remove the support for the format version 1. The index file should be ported to the Devhelp index file format version 2.
To upload designs, you'll need to enable LFS and have an admin enable hashed storage. More information