update fn preview image

main.js

@@ -879,11 +879,17 @@ window.goToEvidence = function () {
 };
 
 window.previewImage = function (imageRaw) {
-  const match = (imageRaw.match(/\d+/) || 1) - 1;
-  const image = data.value.readme_content.media[+match];
+  const match = imageRaw.match(/\d+/);
+  if (!match) return;
+
+  const index = Number(match[0]) - 1;
+  const image = data.value.readme_content.media[index];
+
+  if (!image) return;
+
   createTemplateModal(
     `<img src="data:image/jpeg;base64,${image}" alt="Image Preview" style="max-width: 100%; height: auto;" />`,
-    `Image ${+match + 1}`
+    `Image ${index + 1}`
   );
 };