Exception

by_db:2433] by_db:551] by_db:508] by_db:592] Unknown frame descriptor (/var/byzon/sftp/protected/models/Translation.php:54)

#0 /var/byzon/sftp/protected/models/Translation.php(54): by_db\translations_for_category_and_language('content', 'en')
#1 /var/byzon/sftp/protected/components/ByzonMessageSource.php(10): Translation::forCategoryAndLanguage('content', 'en')
#2 /var/byzon/sftp/protected/components/ByzonMessageSource.php(29): ByzonMessageSource->loadMessages('content', 'en')
#3 /var/byzon/sftp/protected/components/ByzonMessageSource.php(36): ByzonMessageSource->translateMessage('content', '\xD0\xA1\xD1\x82\xD1\x80\xD0\xB0\xD0\xBD\xD0\xB8\xD1\x86\xD0...', 'en')
#4 /var/byzon/sftp/protected/components/ByzonMessageSource.php(19): ByzonMessageSource->translateMessage('content', '\xD0\xA1\xD1\x82\xD1\x80\xD0\xB0\xD0\xBD\xD0\xB8\xD1\x86\xD0...', 'ru')
#5 /var/byzon/framework/yii-1.1.10.r3566/framework/YiiBase.php(574): ByzonMessageSource->translate('content', '\xD0\xA1\xD1\x82\xD1\x80\xD0\xB0\xD0\xBD\xD0\xB8\xD1\x86\xD0...', NULL)
#6 /var/byzon/sftp/protected/helpers/ErrorHandler.php(53): YiiBase::t('content', '\xD0\xA1\xD1\x82\xD1\x80\xD0\xB0\xD0\xBD\xD0\xB8\xD1\x86\xD0...')
#7 /var/byzon/sftp/protected/helpers/ErrorHandler.php(30): ErrorHandler::handleNotFound()
#8 [internal function]: ErrorHandler::handleException(Object(CExceptionEvent))
#9 /var/byzon/framework/yii-1.1.10.r3566/framework/base/CComponent.php(557): call_user_func(Array, Object(CExceptionEvent))
#10 /var/byzon/framework/yii-1.1.10.r3566/framework/base/CApplication.php(837): CComponent->raiseEvent('onException', Object(CExceptionEvent))
#11 /var/byzon/framework/yii-1.1.10.r3566/framework/base/CApplication.php(708): CApplication->onException(Object(CExceptionEvent))
#12 [internal function]: CApplication->handleException(Object(CHttpException))
#13 {main}