Fatal error: Uncaught Error: Call to undefined method WP_Theme::is_block_theme() in /home/customer/www/vailebikerentals.com/public_html/wp-includes/theme.php:4165 Stack trace: #0 /home/customer/www/vailebikerentals.com/public_html/wp-includes/theme.php(4177): wp_is_block_theme() #1 /home/customer/www/vailebikerentals.com/public_html/wp-includes/class-wp-hook.php(303): _add_default_theme_supports('') #2 /home/customer/www/vailebikerentals.com/public_html/wp-includes/class-wp-hook.php(327): WP_Hook->apply_filters(NULL, Array) #3 /home/customer/www/vailebikerentals.com/public_html/wp-includes/plugin.php(474): WP_Hook->do_action(Array) #4 /home/customer/www/vailebikerentals.com/public_html/wp-settings.php(510): do_action('setup_theme') #5 /home/customer/www/vailebikerentals.com/public_html/wp-config.php(92): require_once('/home/customer/...') #6 /home/customer/www/vailebikerentals.com/public_html/wp-load.php(50): require_once('/home/customer/...') #7 /home/customer/www/vailebikerentals.com/public_html/wp-blog-header.php(13): in /home/customer/www/vailebikerentals.com/public_html/wp-includes/theme.php on line 4165