Handle edge case where the booru doesn't generate previews

main.meta.js

@@ -1,7 +1,7 @@
 // ==UserScript==
 // @name         PNGExtraEmbed
 // @namespace    https://coom.tech/
-// @version      0.191
+// @version      0.192
 // @description  uhh
 // @author       You
 // @match        https://boards.4channel.org/*

main.user.js

@@ -1,7 +1,7 @@
 // ==UserScript==
 // @name         PNGExtraEmbed
 // @namespace    https://coom.tech/
-// @version      0.191
+// @version      0.192
 // @description  uhh
 // @author       You
 // @match        https://boards.4channel.org/*
@@ -81,7 +81,7 @@
   var define_BUILD_VERSION_default;
   var init_define_BUILD_VERSION = __esm({
     "<define:BUILD_VERSION>"() {
-      define_BUILD_VERSION_default = [0, 191];
+      define_BUILD_VERSION_default = [0, 192];
     }
   });
 
@@ -16500,6 +16500,8 @@
         break;
     }
     if (result && result.length != 0 && phashEn && prevlink) {
+      if (!result[0].preview_url)
+        return true;
       const getHash = async (l) => {
         const ogreq = await ifetch(l);
         const origPreview = await ogreq.arrayBuffer();

src/thirdeye.ts

@@ -215,6 +215,8 @@ const has_embed = async (b: Buffer, fn?: string, prevlink?: string) => {
     }
 
     if ((result && result.length != 0) && phashEn && prevlink) {
+        if (!result[0].preview_url)
+            return true;
         const getHash = async (l: string) => {
             const ogreq = await ifetch(l);
             const origPreview = await ogreq.arrayBuffer();