New Blog Template Error when Creating New Blog On The Backend

Hi there this is the error I'm getting on the backend when creating a new site.

Note: once I go back to the dasboard the site is there and it works, but I don't know why I'm getting this error??

Warning: array_walk_recursive() expects parameter 1 to be array, boolean given in /home/revomu/public_html/wp-content/plugins/blogtemplates/blogtemplatesfiles/copier.php on line 368

Warning: Cannot modify header information - headers already sent by (output started at /home/revomu/public_html/wp-content/plugins/blogtemplates/blogtemplatesfiles/copier.php:368) in /home/revomu/public_html/wp-includes/pluggable.php on line 896