Warning: Use of undefined constant VC_SHORTCODE_CUSTOM_CSS_FILTER_TAG - assumed 'VC_SHORTCODE_CUSTOM_CSS_FILTER_TAG' (this will throw an Error in a future version of PHP) in /home/customer/www/varabarn.nu/public_html/wp-content/plugins/klb-shortcode/klb-shortcode.php on line 797

Fatal error: Uncaught Error: Call to undefined function vc_shortcode_custom_css_class() in /home/customer/www/varabarn.nu/public_html/wp-content/plugins/klb-shortcode/klb-shortcode.php:797 Stack trace: #0 /home/customer/www/varabarn.nu/public_html/wp-includes/shortcodes.php(356): act_btn_button(Array, '', 'btn_button') #1 [internal function]: do_shortcode_tag(Array) #2 /home/customer/www/varabarn.nu/public_html/wp-includes/shortcodes.php(228): preg_replace_callback('/\\[(\\[?)(btn_bu...', 'do_shortcode_ta...', '[vc_row css=&#8...') #3 /home/customer/www/varabarn.nu/public_html/wp-includes/class-wp-hook.php(307): do_shortcode('[vc_row css=&#8...') #4 /home/customer/www/varabarn.nu/public_html/wp-includes/plugin.php(191): WP_Hook->apply_filters('[vc_row css=&#8...', Array) #5 /home/customer/www/varabarn.nu/public_html/wp-includes/post-template.php(253): apply_filters('the_content', '[vc_row css=".v...') #6 /home/customer/www/varabarn.nu/public_html/wp-content/themes/flatsome/page.php(33): the_content() #7 /home/customer/www in /home/customer/www/varabarn.nu/public_html/wp-content/plugins/klb-shortcode/klb-shortcode.php on line 797