diff --git a/src/bot/message-sender.js b/src/bot/message-sender.js
index 23313203..0e02c4f3 100644
--- a/src/bot/message-sender.js
+++ b/src/bot/message-sender.js
@@ -60,7 +60,8 @@ export async function sendStreamingMessage(ctx, text, options = {}) {
     
     // Log response structure - try to understand the format
     logger.info('📡 Response typeof:', typeof sentMsg);
-    logger.info('📡 sentMsg:', JSON.stringify(sentMsg).substring(0, 300));
+    logger.info('📡 sentMsg constructor:', sentMsg?.constructor?.name);
+    logger.info('📡 sentMsg has result?:', 'result' in (sentMsg || {}));
     
     // The response might be wrapped in a 'result' property
     const response = sentMsg?.result || sentMsg;