there is an error thrown at the portfolio single page when displaying the category name of the portfolio item: Fatal error: Call to undefined function esc_atts() in /homepages/11/d362554909/htdocs/hype_wp/wp-content/themes/solveto/template_inc/loop-single_portfolio_bottom.php on line 89
It seems to me that there is a typo. The function name should be 'esc_attr' instead of 'esc_atts'.
I changed it in the source file by myself. The error message disappeared, but there is no category name displayed.