Fatal error: Call to a member function getLang() on a non-object in /var/www/chemiewerkt/system/ext/I18N/Translation2AdminWrapper.php on line 74

Call Stack:
    0.0004     149444   1. {main}() /var/www/chemiewerkt/index.php:0
    0.0878     617676   2. SJB_System::init() /var/www/chemiewerkt/index.php:58
    0.8032    4000344   3. SJB_ModuleManager->executeModulesStartupFunctions() /var/www/chemiewerkt/system/core/System.php:242
    0.8039    4042268   4. ThemeManager::getCurrentTheme() /var/www/chemiewerkt/system/core/ModuleManager.php:351
    1.0542    5049176   5. SJB_I18N->switchLang() /var/www/chemiewerkt/system/core/TemplateSupplier.php:271
    1.0542    5049200   6. I18NSwitchLanguageAgent->execute() /var/www/chemiewerkt/system/core/I18N.php:100
    1.0542    5049296   7. I18NSwitchLanguageAgent->fetchExistLanguage() /var/www/chemiewerkt/system/ext/I18N/I18NSwitchLanguageAgent.php:52
    1.0542    5049796   8. SJB_I18N->languageExists() /var/www/chemiewerkt/system/ext/I18N/I18NSwitchLanguageAgent.php:77
    1.0544    5054468   9. SJB_LanguageExistsValidator->isValid() /var/www/chemiewerkt/system/core/I18N.php:539
    1.0544    5054536  10. I18NDataSource->getLanguagesData() /var/www/chemiewerkt/system/lib/Validation/LanguageExistsValidator.php:35
    1.0545    5054560  11. I18NLanguageDataSource->getLanguagesData() /var/www/chemiewerkt/system/ext/I18N/I18NDatasource.php:158
    1.0545    5054696  12. Translation2AdminWrapper->getLangs() /var/www/chemiewerkt/system/ext/I18N/I18NLanguageDataSource.php:75
    1.0548    5062248  13. Translation2AdminWrapper->getLang() /var/www/chemiewerkt/system/ext/I18N/Translation2AdminWrapper.php:90