Error in upload file

Hi,
When I upload file in public_html I see below error but file was upload successfully:
Deprecated: Function ereg() is deprecated in /usr/local/cwpsrv/htdocs/admin/modules/file_manager.php(1) : eval()'d code(1) : eval()'d code on line 212

What is the problem for?

Deprecated: Function ereg() in newer version of php.

How can I resolve this problem?

ig you do not have any error that igore it, as this needs to be resolved with file manager update.