Fatal error: Uncaught Error: Call to undefined function is_product() in /home/activities.jlu.edu.in/public_html/wp-content/themes/booth/includes/qodef-body-class-functions.php:224 Stack trace: #0 /home/activities.jlu.edu.in/public_html/wp-includes/class-wp-hook.php(326): booth_select_fixed_sticky_header_skin_body_class() #1 /home/activities.jlu.edu.in/public_html/wp-includes/plugin.php(205): WP_Hook->apply_filters() #2 /home/activities.jlu.edu.in/public_html/wp-includes/post-template.php(866): apply_filters() #3 /home/activities.jlu.edu.in/public_html/wp-includes/post-template.php(622): get_body_class() #4 /home/activities.jlu.edu.in/public_html/wp-content/themes/booth/header.php(16): body_class() #5 /home/activities.jlu.edu.in/public_html/wp-includes/template.php(810): require_once('/home/activitie...') #6 /home/activities.jlu.edu.in/public_html/wp-includes/template.php(745): load_template() #7 /home/activities.jlu.edu.in/public_html/wp-includes/general-template.php(48): locate_template() #8 /home/activities.jlu.edu.in/p in /home/activities.jlu.edu.in/public_html/wp-content/themes/booth/includes/qodef-body-class-functions.php on line 224