From dd9df4083accf50c2a69d6942a205465f022dc97 Mon Sep 17 00:00:00 2001
From: Filipe <email@filipemiranda.dev>
Date: Mon, 19 Jan 2026 10:54:31 -0300
Subject: [PATCH] fix: use markSeen instead of sendSeen to fix markedUnread
 error (#5719)

Fixes TypeError: Cannot read properties of undefined (reading 'markedUnread')
that occurs in newer WhatsApp Web versions.

The sendSeen method was removed/changed in recent WhatsApp Web updates.
Using markSeen resolves the issue.

Fixes #5718

Co-authored-by: cp1797 <cp1797@users.noreply.github.com>
Co-authored-by: eltonnicolau <eltonnicolau@users.noreply.github.com>
Co-authored-by: telmedola <telmedola@users.noreply.github.com>
Co-authored-by: qw271862028 <qw271862028@users.noreply.github.com>
Co-authored-by: duola8789 <duola8789@users.noreply.github.com>
---
 src/util/Injected/Utils.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/util/Injected/Utils.js b/src/util/Injected/Utils.js
index af2a39a..9bb2e4b 100644
--- a/src/util/Injected/Utils.js
+++ b/src/util/Injected/Utils.js
@@ -13,7 +13,7 @@ exports.LoadUtils = () => {
         const chat = await window.WWebJS.getChat(chatId, { getAsModel: false });
         if (chat) {
             window.Store.WAWebStreamModel.Stream.markAvailable();
-            await window.Store.SendSeen.sendSeen(chat);
+            await window.Store.SendSeen.markSeen(chat);
             window.Store.WAWebStreamModel.Stream.markUnavailable();
             return true;
         }