diff --git a/chat_web_front/src/views/reading/index.vue b/chat_web_front/src/views/reading/index.vue
index 612851a..540543c 100644
--- a/chat_web_front/src/views/reading/index.vue
+++ b/chat_web_front/src/views/reading/index.vue
@@ -437,8 +437,9 @@ const loadPdfFile = async () => {
   if (!selectedFile.value) return;
   docHtml.value = '';
   try {
-    const blob = await downloadFile({ fileId: selectedFile.value.fileId });
-    const arrayBuffer = await (blob as Blob).arrayBuffer();
+    const resp = await downloadFile({ fileId: selectedFile.value.fileId });
+    const blob = new Blob([resp]);
+    const arrayBuffer = await blob.arrayBuffer();
     pdfData.value = arrayBuffer;
   } catch (e: any) {
     pdfData.value = null;