420441 – org.kde.kcm1.2 : QML module does not contain information about components contained in plugins.

Bug 420441 - org.kde.kcm1.2 : QML module does not contain information about components contained in plugins.

Summary: org.kde.kcm1.2 : QML module does not contain information about components co...

Status:	REPORTED

Alias:	None

Product:	frameworks-kcmutils
Classification:	Frameworks and Libraries
Component:	general (other bugs)
Version First Reported In:	5.69.0
Platform:	Arch Linux Linux

Importance:	NOR major
Target Milestone:	---
Assignee:	kdelibs bugs

URL:
Keywords:

Depends on:
Blocks:

Reported:	2020-04-23 03:25 UTC by 319513897@outlook.com
Modified:	2020-04-23 03:25 UTC (History)
CC List:	0 users

See Also:
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Version Fixed/Implemented In:
Sentry Crash Report:

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Description 319513897@outlook.com 2020-04-23 03:25:52 UTC

SUMMARY
kde setting -> locale setting -> language -> add language can't work.
When I try add new language from "language", it had nothing happend.
I use "journalctl -xb" found some error : 

4月 23 11:14:50 dragon systemsettings5[14280]: QQmlEngine::setContextForObject(): Object already has a QQmlContext
4月 23 11:14:50 dragon systemsettings5[14280]: kf5.ki18n: "1 instead of 2 arguments to message {无法找到代码为“%2”的语言的翻译文件。...} supplied before conversion."
4月 23 11:14:50 dragon systemsettings5[14280]: file:///usr/share/kpackage/kcms/kcm_translations/contents/ui/main.qml:43: TypeError: Cannot read property 'display' of null
4月 23 11:14:50 dragon systemsettings5[14280]: file:///usr/share/kpackage/kcms/kcm_translations/contents/ui/main.qml:39: TypeError: Cannot read property 'LanguageCode' of null
4月 23 11:14:50 dragon systemsettings5[14280]: file:///usr/share/kpackage/kcms/kcm_translations/contents/ui/main.qml:43: TypeError: Cannot read property 'display' of null
4月 23 11:14:50 dragon systemsettings5[14280]: file:///usr/share/kpackage/kcms/kcm_translations/contents/ui/main.qml:39: TypeError: Cannot read property 'LanguageCode' of null
4月 23 11:14:50 dragon systemsettings5[14280]: file:///usr/share/kpackage/kcms/kcm_translations/contents/ui/main.qml:43: TypeError: Cannot read property 'display' of null
4月 23 11:14:50 dragon systemsettings5[14280]: file:///usr/share/kpackage/kcms/kcm_translations/contents/ui/main.qml:39: TypeError: Cannot read property 'LanguageCode' of null
4月 23 11:14:50 dragon systemsettings5[14280]: file:///usr/share/kpackage/kcms/kcm_translations/contents/ui/main.qml:43: TypeError: Cannot read property 'display' of null
4月 23 11:14:50 dragon systemsettings5[14280]: file:///usr/share/kpackage/kcms/kcm_translations/contents/ui/main.qml:39: TypeError: Cannot read property 'LanguageCode' of null
4月 23 11:14:50 dragon systemsettings5[14280]: file:///usr/share/kpackage/kcms/kcm_translations/contents/ui/main.qml:43: TypeError: Cannot read property 'display' of null
4月 23 11:14:50 dragon systemsettings5[14280]: file:///usr/share/kpackage/kcms/kcm_translations/contents/ui/main.qml:39: TypeError: Cannot read property 'LanguageCode' of null
4月 23 11:14:50 dragon systemsettings5[14280]: file:///usr/share/kpackage/kcms/kcm_translations/contents/ui/main.qml:43: TypeError: Cannot read property 'display' of null
4月 23 11:14:50 dragon systemsettings5[14280]: file:///usr/share/kpackage/kcms/kcm_translations/contents/ui/main.qml:39: TypeError: Cannot read property 'LanguageCode' of null
4月 23 11:14:50 dragon systemsettings5[14280]: file:///usr/share/kpackage/kcms/kcm_translations/contents/ui/main.qml:43: TypeError: Cannot read property 'display' of null
4月 23 11:14:50 dragon systemsettings5[14280]: file:///usr/share/kpackage/kcms/kcm_translations/contents/ui/main.qml:39: TypeError: Cannot read property 'LanguageCode' of null
4月 23 11:14:50 dragon systemsettings5[14280]: file:///usr/share/kpackage/kcms/kcm_translations/contents/ui/main.qml:43: TypeError: Cannot read property 'display' of null
4月 23 11:14:50 dragon systemsettings5[14280]: file:///usr/share/kpackage/kcms/kcm_translations/contents/ui/main.qml:39: TypeError: Cannot read property 'LanguageCode' of null
4月 23 11:14:50 dragon systemsettings5[14280]: file:///usr/share/kpackage/kcms/kcm_translations/contents/ui/main.qml:43: TypeError: Cannot read property 'display' of null
4月 23 11:14:50 dragon systemsettings5[14280]: file:///usr/share/kpackage/kcms/kcm_translations/contents/ui/main.qml:39: TypeError: Cannot read property 'LanguageCode' of null
4月 23 11:14:50 dragon systemsettings5[14280]: file:///usr/share/kpackage/kcms/kcm_translations/contents/ui/main.qml:43: TypeError: Cannot read property 'display' of null
4月 23 11:14:50 dragon systemsettings5[14280]: file:///usr/share/kpackage/kcms/kcm_translations/contents/ui/main.qml:39: TypeError: Cannot read property 'LanguageCode' of null
4月 23 11:14:50 dragon systemsettings5[14280]: file:///usr/share/kpackage/kcms/kcm_translations/contents/ui/main.qml:43: TypeError: Cannot read property 'display' of null
4月 23 11:14:50 dragon systemsettings5[14280]: file:///usr/share/kpackage/kcms/kcm_translations/contents/ui/main.qml:39: TypeError: Cannot read property 'LanguageCode' of null
4月 23 11:14:50 dragon systemsettings5[14280]: file:///usr/share/kpackage/kcms/kcm_translations/contents/ui/main.qml:43: TypeError: Cannot read property 'display' of null
4月 23 11:14:50 dragon systemsettings5[14280]: file:///usr/share/kpackage/kcms/kcm_translations/contents/ui/main.qml:39: TypeError: Cannot read property 'LanguageCode' of null
4月 23 11:14:50 dragon systemsettings5[14280]: file:///usr/share/kpackage/kcms/kcm_translations/contents/ui/main.qml:43: TypeError: Cannot read property 'display' of null
4月 23 11:14:50 dragon systemsettings5[14280]: file:///usr/share/kpackage/kcms/kcm_translations/contents/ui/main.qml:39: TypeError: Cannot read property 'LanguageCode' of null
4月 23 11:14:50 dragon systemsettings5[14280]: file:///usr/share/kpackage/kcms/kcm_translations/contents/ui/main.qml:43: TypeError: Cannot read property 'display' of null
4月 23 11:14:50 dragon systemsettings5[14280]: file:///usr/share/kpackage/kcms/kcm_translations/contents/ui/main.qml:39: TypeError: Cannot read property 'LanguageCode' of null
4月 23 11:14:50 dragon systemsettings5[14280]: file:///usr/share/kpackage/kcms/kcm_translations/contents/ui/main.qml:43: TypeError: Cannot read property 'display' of null
4月 23 11:14:50 dragon systemsettings5[14280]: file:///usr/share/kpackage/kcms/kcm_translations/contents/ui/main.qml:39: TypeError: Cannot read property 'LanguageCode' of null
4月 23 11:14:50 dragon systemsettings5[14280]: file:///usr/share/kpackage/kcms/kcm_translations/contents/ui/main.qml:43: TypeError: Cannot read property 'display' of null
4月 23 11:14:50 dragon systemsettings5[14280]: file:///usr/share/kpackage/kcms/kcm_translations/contents/ui/main.qml:39: TypeError: Cannot read property 'LanguageCode' of null
4月 23 11:14:50 dragon systemsettings5[14280]: file:///usr/share/kpackage/kcms/kcm_translations/contents/ui/main.qml:43: TypeError: Cannot read property 'display' of null
4月 23 11:14:50 dragon systemsettings5[14280]: file:///usr/share/kpackage/kcms/kcm_translations/contents/ui/main.qml:39: TypeError: Cannot read property 'LanguageCode' of null
4月 23 11:14:50 dragon systemsettings5[14280]: file:///usr/share/kpackage/kcms/kcm_translations/contents/ui/main.qml:43: TypeError: Cannot read property 'display' of null
4月 23 11:14:50 dragon systemsettings5[14280]: file:///usr/share/kpackage/kcms/kcm_translations/contents/ui/main.qml:39: TypeError: Cannot read property 'LanguageCode' of null
4月 23 11:14:50 dragon systemsettings5[14280]: file:///usr/share/kpackage/kcms/kcm_translations/contents/ui/main.qml:43: TypeError: Cannot read property 'display' of null
4月 23 11:14:50 dragon systemsettings5[14280]: file:///usr/share/kpackage/kcms/kcm_translations/contents/ui/main.qml:39: TypeError: Cannot read property 'LanguageCode' of null
4月 23 11:14:50 dragon systemsettings5[14280]: file:///usr/share/kpackage/kcms/kcm_translations/contents/ui/main.qml:43: TypeError: Cannot read property 'display' of null
4月 23 11:14:50 dragon systemsettings5[14280]: file:///usr/share/kpackage/kcms/kcm_translations/contents/ui/main.qml:39: TypeError: Cannot read property 'LanguageCode' of null
4月 23 11:14:52 dragon systemsettings5[14280]: Couldn't load plugin: "共享库没有被找到。"

I open /usr/share/kpackage/kcms/kcm_translations/contents/ui/main.qml with qtcreator, it has an error at "import org.kde.kcm 1.2
" : QML module does not contain information about components contained in plugins.

STEPS TO REPRODUCE
1. Install ArchLinux with "plasma" package and some other package.
2. Step into kde-desktop
3. Try to add new language

OBSERVED RESULT

Nothing happend, but 'journalctl -xb' could found some error log.

EXPECTED RESULT

Add new language surely.

SOFTWARE/OS VERSIONS
Windows: 
macOS: 
Linux/KDE Plasma:
(available in About System)
KDE Plasma Version: 5.18.4
KDE Frameworks Version: 5,69.0
Qt Version: 5.14.2

ADDITIONAL INFORMATION

ArchLinux with plasma, kf5, etc. packages