Fix: Store Notices block breaks page editors

src/BlockTypes/StoreNotices.php

@@ -26,6 +26,17 @@ class StoreNotices extends AbstractBlock {
 	 * @return string | void Rendered block output.
 	 */
 	protected function render( $attributes, $content, $block ) {
+		/**
+		 * This block should be rendered only on the frontend. Woo loads notice
+		 * functions on the front end requests only. So it's safe and handy to
+		 * check for the print notice function existence to short circuit the
+		 * render process on the admin side.
+		 * See WooCommerce::is_request() for the frontend request definition.
+		 */
+		if ( ! function_exists( 'wc_print_notices' ) ) {
+			return $content;
+		}
+
 		ob_start();
 		woocommerce_output_all_notices();
 		$notices = ob_get_clean();