Warning: Declaration of Bootstrap_Walker_Nav_Menu::start_lvl(&$output, $depth) should be compatible with Walker_Nav_Menu::start_lvl(&$output, $depth = 0, $args = NULL) in /home/customer/www/leeroebuckracing.com/public_html/wp-content/themes/leeroebuckracing/functions.php on line 575

Error thrown

[] operator not supported for strings