Homepage Warning

Ok, so I updated my WP version from 4.0.5 to the latest and I get this warning on my homepage.

Warning: array_map() [function.array-map]: Argument #2 should be an array in /home/content/40/10379740/html/wp-content/themes/infocus/functions.php on line 24

Warning: implode() [function.implode]: Invalid arguments passed in /home/content/40/10379740/html/wp-content/themes/infocus/functions.php on line 24

Header information – headers already sent by (output started at /home/content/40/10379740/html/wp-content/themes/infocus/functions.php:24) in /home/content/40/10379740/html/wp-includes/option.php on line 772

Warning: Cannot modify header information – headers already sent by (output started at /home/content/40/10379740/html/wp-content/themes/infocus/functions.php:24) in /home/content/40/10379740/html/wp-includes/option.php on line 773

I’m using inFocus theme.

please help me.