Your package python-pywt failed to build from source in current F28. https://koji.fedoraproject.org/koji/taskinfo?taskID=24880686 For details on mass rebuild see https://fedoraproject.org/wiki/Fedora_28_Mass_Rebuild
This seems a false positive, as the latest F28 build in koji is correct: https://koji.fedoraproject.org/koji/buildinfo?buildID=1038694