This is a Fresh Install of Joomla nothing in it except install content
Added home menu link as Category Blog and select Category here is the issue
Fatal error: Call to undefined function mb_strtolower() in /home/believe/dev/components/com_tz_portfolio/models/portfolio.php on line 1053
I did this on 2 different servers and 2 different New Installations.
Please Help with this issue.