After files transfer an error message apears

sudol / 2019-12-16 17:27:43   

This website was created in 2011 with indexhibit.
After a picture upload. The frontpage was issueing "Fatal error: Call to undefined function: romanizefile() in /home/maximesu/www/ndxz-studio/helper/output.php on line 115"

Maybe i moved somefile.
I was looking about a website structure to compare the directories.

I haven't any backups.
Can you help me?