Fatal error: Uncaught TypeError: call_user_func_array(): Argument #1 ($callback) must be a valid callback, non-static method OWA_Block::register_widget_sidebar() cannot be called statically in /webroot/w/e/webbe004/urbanymphoto/www/wp-includes/class-wp-hook.php:292 Stack trace: #0 /webroot/w/e/webbe004/urbanymphoto/www/wp-includes/class-wp-hook.php(316): WP_Hook->apply_filters() #1 /webroot/w/e/webbe004/urbanymphoto/www/wp-includes/plugin.php(484): WP_Hook->do_action() #2 /webroot/w/e/webbe004/urbanymphoto/www/wp-includes/widgets.php(1799): do_action() #3 /webroot/w/e/webbe004/urbanymphoto/www/wp-includes/class-wp-hook.php(292): wp_widgets_init() #4 /webroot/w/e/webbe004/urbanymphoto/www/wp-includes/class-wp-hook.php(316): WP_Hook->apply_filters() #5 /webroot/w/e/webbe004/urbanymphoto/www/wp-includes/plugin.php(484): WP_Hook->do_action() #6 /webroot/w/e/webbe004/urbanymphoto/www/wp-settings.php(560): do_action() #7 /webroot/w/e/webbe004/urbanymphoto/www/wp-config.php(90): require_once('...') #8 /webroot/w/e/webbe004/urbanymphoto/www/wp-load.php(37): require_once('...') #9 /webroot/w/e/webbe004/urbanymphoto/www/wp-blog-header.php(13): require_once('...') #10 /webroot/w/e/webbe004/urbanymphoto/www/index.php(17): require('...') #11 {main} thrown in /webroot/w/e/webbe004/urbanymphoto/www/wp-includes/class-wp-hook.php on line 292