Nifty TC

Fatal error: Uncaught Error: [] operator not supported for strings in /home/customer/www/colourvranch.com/public_html/wp-content/themes/longwave/functions/theme_functions.php:507 Stack trace: #0 /home/customer/www/colourvranch.com/public_html/wp-content/themes/longwave/single-portfolio.php(42): get_excluded_portfolio_categories('42') #1 /home/customer/www/colourvranch.com/public_html/wp-includes/template-loader.php(106): include('/home/customer/...') #2 /home/customer/www/colourvranch.com/public_html/wp-blog-header.php(19): require_once('/home/customer/...') #3 /home/customer/www/colourvranch.com/public_html/index.php(17): require('/home/customer/...') #4 {main} thrown in /home/customer/www/colourvranch.com/public_html/wp-content/themes/longwave/functions/theme_functions.php on line 507