Copying language files errors

[Master-Overlord]

Hello to all, I just discovered  that if I go to International / Translation and in Copy section I try to copy language files from Eng version of template to Serbian language I get errors:

Impossible to copy "/**********/translations/en/admin.php" to "/********/translations/sr/admin.php".
Impossible to copy "/**********/translations/en/errors.php" to "/***********/translations/sr/errors.php".
Impossible to copy "/**********/translations/en/fields.php" to "/***********/translations/sr/fields.php".
Impossible to copy "/***********/translations/en/pdf.php" to "/***********/translations/sr/pdf.php".
Impossible to copy "/***********/translations/en/tabs.php" to "/***********/translations/sr/tabs.php".
Impossible to copy "/***********/mails/en/lang.php" to "/***********/mails/sr/lang.php".
Impossible to copy "/***********/themes/classic/lang/en.php" to "/***********/themes/classic/lang/sr.php".
A part of the data has been copied but some of the language files could not be found.

Can someone advise?

 

Thank you!