Hi Please rebuild libxml2 for f23 and f24, this is making some issues for publican. https://bodhi.fedoraproject.org/updates/?packages=libxml2
This bug appears to have been reported against 'rawhide' during the Fedora 24 development cycle. Changing version to '24'. More information and reason for this action is here: https://fedoraproject.org/wiki/Fedora_Program_Management/HouseKeeping/Fedora24#Rawhide_Rebase