diff --git a/cm_bot_hal.py b/cm_bot_hal.py
index 41a3033..bad1f6a 100644
--- a/cm_bot_hal.py
+++ b/cm_bot_hal.py
@@ -166,7 +166,8 @@ class CM_BOT_HAL:
             username = f_username,
             password = f_password
         ) == False:
-            raise Exception(f'[Cannot login] {f_username} cannot login.')
+            print(f'[Cannot login] {f_username} cannot login.')
+            return 0
         return float(cm_bot.get_user_credit())
 
     def transfer_credit_api(self, f_username: str, f_password: str, t_username: str, t_password: str):
@@ -175,7 +176,8 @@ class CM_BOT_HAL:
             username = f_username,
             password = f_password
         ) == False:
-            raise Exception(f'[Cannot login] {f_username} cannot login.')
+            print(f'[Cannot login] {f_username} cannot login.')
+            return False
         amount = cm_bot.get_user_credit() - 0.01
         if amount <= 0.01:
             print(f'[No enough credit] {f_username} do not have enough credit.')
diff --git a/cm_transfer_credit.py b/cm_transfer_credit.py
index 03b2fde..553dcd1 100644
--- a/cm_transfer_credit.py
+++ b/cm_transfer_credit.py
@@ -19,7 +19,8 @@ max_threading = 1
 def transfer(data: dict, local_logger):
     bot = CM_BOT_HAL()
     local_logger.info(f"[Start] Transfer Credit from {data['f_username']} to {data['t_username']}")
-    bot.transfer_credit_api(data['f_username'], data['f_password'], data['t_username'], data['t_password'])
+    if bot.transfer_credit_api(data['f_username'], data['f_password'], data['t_username'], data['t_password']) == False:
+        local_logger.error(f"Cannot transfer for {data['f_username']}")
     local_logger.info(f"[Done] {data['f_username']} transfer done!")
     del bot
     time.sleep(0.5)