I faced this bug at every login. More crash data is here https://bugzilla.redhat.com/show_bug.cgi?id=1357220

{   "signal": 11
,   "executable": "/usr/bin/kded5"
,   "only_crash_thread": true
,   "stacktrace":
      [ {   "crash_thread": true
        ,   "frames":
              [ {   "address": 140629007412313
                ,   "build_id": "24aa11cd5feeeb999b593fa91b4caa043288d141"
                ,   "build_id_offset": 228441
                ,   "function_name": "XQueryExtension"
                ,   "file_name": "/usr/lib64/libX11.so.6.3.0"
                }
              , {   "address": 140629007362018
                ,   "build_id": "24aa11cd5feeeb999b593fa91b4caa043288d141"
                ,   "build_id_offset": 178146
                ,   "function_name": "XInitExtension"
                ,   "file_name": "/usr/lib64/libX11.so.6.3.0"
                }
              , {   "address": 140629005066767
                ,   "build_id": "6a9056cfd1ad7f811cc0a2447221bd6a9515d2e1"
                ,   "build_id_offset": 53775
                ,   "function_name": "XextAddDisplay"
                ,   "file_name": "/usr/lib64/libXext.so.6.4.0"
                }
              , {   "address": 140628053110102
                ,   "build_id": "51fb1419db477f8a245005c03e9b89e16047a4fd"
                ,   "build_id_offset": 7510
                ,   "function_name": "XRRFindDisplay"
                ,   "file_name": "/usr/lib64/libXrandr.so.2.2.0"
                }
              , {   "address": 140628053111681
                ,   "build_id": "51fb1419db477f8a245005c03e9b89e16047a4fd"
                ,   "build_id_offset": 9089
                ,   "function_name": "XRRQueryExtension"
                ,   "file_name": "/usr/lib64/libXrandr.so.2.2.0"
                }
              , {   "address": 140628055333125
                ,   "build_id": "6a7881ecd60c9781d8e3ce187aee393508622723"
                ,   "build_id_offset": 88325
                ,   "function_name": "ColorD::connectToDisplay()"
                ,   "file_name": "/usr/lib64/qt5/plugins/kded_colord.so"
                }
              , {   "address": 140628055334968
                ,   "build_id": "6a7881ecd60c9781d8e3ce187aee393508622723"
                ,   "build_id_offset": 90168
                ,   "function_name": "ColorD::ColorD(QObject*, QList<QVariant> const&)"
                ,   "file_name": "/usr/lib64/qt5/plugins/kded_colord.so"
                }
              , {   "address": 140628055372559
                ,   "build_id": "6a7881ecd60c9781d8e3ce187aee393508622723"
                ,   "build_id_offset": 127759
                ,   "function_name": "QObject* KPluginFactory::createInstance<ColorD, QObject>(QWidget*, QObject*, QList<QVariant> const&)"
                ,   "file_name": "/usr/lib64/qt5/plugins/kded_colord.so"
                }
              , {   "address": 140629047705691
                ,   "build_id": "a336db59e4a62916fc18d057c65f1b667b9322bd"
                ,   "build_id_offset": 278619
                ,   "function_name": "KPluginFactory::create(char const*, QWidget*, QObject*, QList<QVariant> const&, QString const&)"
                ,   "file_name": "/usr/lib64/libKF5CoreAddons.so.5.27.0"
                }
              , {   "address": 140629071339542
                ,   "build_id": "cd318e9e62702669dfe3646d6c7b4085031e4315"
                ,   "build_id_offset": 40982
                ,   "function_name": "Kded::loadModule(KPluginMetaData const&, bool)"
                ,   "file_name": "/usr/lib64/libkdeinit5_kded5.so"
                }
              , {   "address": 140629071342082
                ,   "build_id": "cd318e9e62702669dfe3646d6c7b4085031e4315"
                ,   "build_id_offset": 43522
                ,   "function_name": "Kded::initModules()"
                ,   "file_name": "/usr/lib64/libkdeinit5_kded5.so"
                }
              , {   "address": 140629071343115
                ,   "build_id": "cd318e9e62702669dfe3646d6c7b4085031e4315"
                ,   "build_id_offset": 44555
                ,   "function_name": "Kded::recreate(bool)"
                ,   "file_name": "/usr/lib64/libkdeinit5_kded5.so"
                }
              , {   "address": 140629071347458
                ,   "build_id": "cd318e9e62702669dfe3646d6c7b4085031e4315"
                ,   "build_id_offset": 48898
                ,   "function_name": "kdemain"
                ,   "file_name": "/usr/lib64/libkdeinit5_kded5.so"
                } ]
        } ]
}