Your package python-vobject failed to build from source in current rawhide. https://koji.fedoraproject.org/koji/taskinfo?taskID=17788045 For details on mass rebuild see https://fedoraproject.org/wiki/Fedora_26_Mass_Rebuild
Created attachment 1253914 [details] build.log
Created attachment 1253915 [details] root.log
Created attachment 1253916 [details] state.log
pingou's python-vobject-0.9.4.1-2.fc26 completed http://koji.fedoraproject.org/koji/buildinfo?buildID=855482