If the user chooses the Serbian language of the form to upload supplementary file, it is unable to upload the file and following message appear:
Došlo je do grešaka prilikom obrade forme:
There was an error processing the form:
Unesite naziv dodatnog fajla. (English)
Please enter the name of the supplemntary file. (English)
If the language changes to English upload is possible!
Setting the language is correctly completed