Broken Theme

I am wanting to use a theme that I found in WP themes, it’s called “Graphene” excellent theme, looks good will do that I am wanting it ti do except for one issue. It’s broken!

When I try to save an theme option in the control panel, I get this: Warning: Missing argument 2 for wp_kses(), called in /home/content/32/2624032/html/wordpress/wp-content/themes/graphene/admin/validator.php on line 294 and defined in /home/content/32/2624032/html/wordpress/wp-includes/kses.php on line 502

Warning: Cannot modify header information – headers already sent by (output started at /home/content/32/2624032/html/wordpress/wp-includes/kses.php:502) in /home/content/32/2624032/html/wordpress/wp-includes/pluggable.php on line 934

Anybody got a fix for this?? I don’t know my code all that well, so I am stumped.

Any help would be appreciated!

Terry