Your package php-facedetect failed to build from source in current F28. https://koji.fedoraproject.org/koji/taskinfo?taskID=25510609 For details on mass rebuild see https://fedoraproject.org/wiki/Fedora_28_Mass_Rebuild
Created attachment 1408240 [details] build.log
Created attachment 1408241 [details] root.log
Created attachment 1408242 [details] state.log
https://github.com/opencv/opencv/issues/10963 https://github.com/opencv/opencv/issues/10246#issuecomment-350116500
php-facedetect-1.2.0-0.3.20180306gitc717941.fc28 has been submitted as an update to Fedora 28. https://bodhi.fedoraproject.org/updates/FEDORA-2018-0ad3244bcb
php-facedetect-1.2.0-0.3.20180306gitc717941.fc28 has been pushed to the Fedora 28 testing repository. If problems still persist, please make note of it in this bug report. See https://fedoraproject.org/wiki/QA:Updates_Testing for instructions on how to install test updates. You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2018-0ad3244bcb
this report was against php-facedetect-1.1.0-11.fc28 we already built php-facedetect-1.2.0-0.3.20180306gitc717941 So fixed before being reported.
php-facedetect-1.2.0-0.3.20180306gitc717941.fc28 has been pushed to the Fedora 28 stable repository. If problems still persist, please make note of it in this bug report.