Solved Translation bug - report :)

administrator / components / com_kunena / libraries / date.php

AGO on site

this is code in date.php

if (!$output) {
$output .= '0 '.JText::_('COM_KUNENA_DATE_MINUTES');
}
$output = str_replace ( '%time%', trim($output), JText::_('COM_KUNENA_TIME_SINCE') );
KUNENA_PROFILER ? KunenaProfiler::instance()->stop('function '.__CLASS__.'::'.__FUNCTION__.'()') : null;
return $output;

This is translation of admin
COM_KUNENA_LIB_TIME_AGO="%s ago"

I replace with
COM_KUNENA_TIME_SINCE="%time% your translation"

and copy - pasted file hr-HR.com_kunena.libraries.ini to administrator/language/hr-HR

SOLVED

COM_KUNENA_TIME_SINCE="%time% your translation"

can not be translated (uk_UA)

origin: "%time% ago"
translate: "%time% тому"
error: "Expression «% a» not in translation."

You translate directly on Transifex? Download the file, and change these string locally on your PC. Upload this file then again on Transifex. That should work.

mazapura wrote: error: "Expression «% a» not in translation."

There is a confirmation box at right of the translation box to force save even with error notice