Backoffice login in russian language

Hi, after login in backoffice with Russian language selected, error popup message is shown like the one in the screenshot below:

My log has also info about conversion exception:

WARN [hybrisHTTP2] [DefaultCockpitWidgetEngine] widget[de.hybris.commercesearchbackoffice.widgets.solrsearch] output socket[searchresultpage] sent object type[de.hybris.commercesearchbackoffice.widgets.solrsearch.SolrSearchController$SolrSearchResultPageable] is NOT compatible with defined type[de.hybris.commercesearchbackoffice.widgets.solrsearch.SearchResult] [DefaultWidgetInstanceManager] Error during send outputjava.util.UnknownFormatConversionException: Conversion = ' '. And something about the non existing code value: [1;31mERROR [hybrisHTTP11] [Messages] Message code not found: 27112705 not in ru:[org.zkoss.zul.mesg.MZul, /metainfo/mesg/msgzul]