i think that i found problem:
after moving to localhost and using “multilanguage author name support” from this topic (Translation of the author's name - #50 by vale) i have found 2 errors:
[Thu Aug 30 21:08:37.925640 2018] [:error] [pid 14308:tid 2000] [client 127.0.0.1:63280] PHP Notice: Array to string conversion in D:\xampp\htdocs\lib\pkp\classes\i18n\LocaleFile.inc.php on line 102, referer: http://uars.ua/index.php/uars/management/importexport/plugin/CrossRefExportPlugin
[Thu Aug 30 21:08:37.960638 2018] [:error] [pid 14308:tid 2000] [client 127.0.0.1:63280] PHP Notice: Array to string conversion in D:\xampp\htdocs\controllers\grid\submissions\ExportPublishedSubmissionsListGridCellProvider.inc.php on line 53, referer: http://uars.ua/index.php/uars/management/importexport/plugin/CrossRefExportPlugin
so. i think problem is in this string: (ExportPublishedSubmissionsListGridCellProvider.inc.php on line 53)
$title = $authorsInTitle . '; ' . $title;
But how to fix this, i have no idea.