E_WARNING: array_merge(): Argument #1 is not an array
in array_merge called at /app/source/public/wp-content/plugins/planet4-plugin-blocks/classes/controller/blocks/class-controller.php (137)in P4BKS\Controllers\Blocks\Controller::prepare_template_preview_iframe called at /app/source/public/wp-includes/shortcodes.php (319)in do_shortcode_tag called at ? (?)in preg_replace_callback called at /app/source/public/wp-includes/shortcodes.php (197)in do_shortcode called at /app/source/public/wp-content/plugins/shortcode-ui/inc/class-shortcode-ui.php (450)in Shortcode_UI::render_shortcode_for_preview called at /app/source/public/wp-content/plugins/shortcode-ui/inc/class-shortcode-ui.php (487)in Shortcode_UI::handle_ajax_bulk_do_shortcode called at /app/source/public/wp-includes/class-wp-hook.php (286)in WP_Hook::apply_filters called at /app/source/public/wp-includes/class-wp-hook.php (310)in WP_Hook::do_action called at /app/source/public/wp-includes/plugin.php (453)in do_action called at /app/source/public/wp-admin/admin-ajax.php (99)