diff --git a/log.py b/log.py
index ae671e3..6beb356 100644
--- a/log.py
+++ b/log.py
@@ -2,32 +2,33 @@ import logging
 
 
 def getlogger():
-    # create a custom logger
+    # create a custom logger if no log handler
     logger = logging.getLogger(__name__)
+    if not logger.hasHandlers():
+        logger.setLevel(logging.INFO)
+        # create handlers
+        warn_handler = logging.StreamHandler()
+        info_handler = logging.StreamHandler()
+        error_handler = logging.FileHandler('bot.log', mode='a')
+        warn_handler.setLevel(logging.WARNING)
+        error_handler.setLevel(logging.ERROR)
+        info_handler.setLevel(logging.INFO)
 
-    # create handlers
-    warn_handler = logging.StreamHandler()
-    info_handler = logging.StreamHandler()
-    error_handler = logging.FileHandler('bot.log', mode='a')
-    warn_handler.setLevel(logging.WARNING)
-    error_handler.setLevel(logging.ERROR)
-    info_handler.setLevel(logging.INFO)
+        # create formatters
+        warn_format = logging.Formatter(
+            '%(name)s - %(funcName)s - %(levelname)s - %(message)s')
+        error_format = logging.Formatter(
+            '%(asctime)s - %(name)s - %(funcName)s - %(levelname)s - %(message)s')
+        info_format = logging.Formatter('%(message)s')
 
-    # create formatters
-    warn_format = logging.Formatter(
-        '%(name)s - %(funcName)s - %(levelname)s - %(message)s')
-    error_format = logging.Formatter(
-        '%(asctime)s - %(name)s - %(funcName)s - %(levelname)s - %(message)s')
-    info_format = logging.Formatter('%(message)s')
+        # set formatter
+        warn_handler.setFormatter(warn_format)
+        error_handler.setFormatter(error_format)
+        info_handler.setFormatter(info_format)
 
-    # set formatter
-    warn_handler.setFormatter(warn_format)
-    error_handler.setFormatter(error_format)
-    info_handler.setFormatter(info_format)
-
-    # add handlers to logger
-    logger.addHandler(warn_handler)
-    logger.addHandler(error_handler)
-    logger.addHandler(info_handler)
+        # add handlers to logger
+        logger.addHandler(warn_handler)
+        logger.addHandler(error_handler)
+        logger.addHandler(info_handler)
 
     return logger
diff --git a/main.py b/main.py
index 4853a82..b71e5d8 100644
--- a/main.py
+++ b/main.py
@@ -1,8 +1,6 @@
 import asyncio
 import json
 import os
-import signal
-from functools import partial
 from bot import Bot
 from log import getlogger
 
@@ -53,6 +51,4 @@ async def main():
 
 if __name__ == "__main__":
     logger.info("matrix chatgpt bot start.....")
-    print("matrix chatgpt bot start.....")
     asyncio.run(main())
-