From 8da2f6ef09c94fd012042cd0c1f0b480c8acc619 Mon Sep 17 00:00:00 2001
From: Nathaniel Taintor <goldenapplesdesign@gmail.com>
Date: Thu, 26 Feb 2026 10:06:09 -0500
Subject: [PATCH] Guard against fatal when block has no inner HTML

Trim HTML before processing in extract_value_from_html
---
 src/Data.php | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/src/Data.php b/src/Data.php
index 72c6ab6..0557abf 100644
--- a/src/Data.php
+++ b/src/Data.php
@@ -188,8 +188,14 @@ private function extract_value_from_meta( array $attribute, ?int $post_id ) {
 	 */
 	private function extract_value_from_html( array $attribute, string $html, ?int $post_id = null ) {
 		$value = null;
+		$html = trim( $html );
+
+		if ( empty( $html ) ) {
+			return null;
+		}
+			
 		try {
-			$dom = new Document( trim( $html ) );
+			$dom = new Document( $html );
 
 			$node = isset( $attribute['selector'] ) ? $dom->find( $attribute['selector'] ) : [ $dom->first( '*' ) ];
 		} catch ( InvalidSelectorException $e ) {