diff --git a/.gitignore b/.gitignore
index b929f0f..c8ca6bf 100644
Binary files a/.gitignore and b/.gitignore differ
diff --git a/agentmain.py b/agentmain.py
index 9e961d0..47e8e07 100644
--- a/agentmain.py
+++ b/agentmain.py
@@ -145,7 +145,9 @@ if __name__ == '__main__':
             while 'done' not in (item := dq.get()): pass
             open('./temp/scheduler.log', 'a', encoding='utf-8').write(f'[{datetime.now():%m-%d %H:%M}] {tag}\n{item["done"]}\n\n')
         while True:
+            time.sleep(55 + random.random() * 10)
             now = datetime.now()
+            if not os.path.isdir('./sche_tasks/pending'): continue
             for f in os.listdir('./sche_tasks/pending'):
                 m = re.match(r'(\d{4}-\d{2}-\d{2})_(\d{4})_', f)
                 if m and now >= datetime.strptime(f'{m[1]} {m[2]}', '%Y-%m-%d %H%M'):
@@ -153,7 +155,6 @@ if __name__ == '__main__':
                     dq = agent.put_task(f'按scheduled_task_sop执行任务文件 ../sche_tasks/pending/{f}（立刻移到running）\n内容：\n{raw}', source='scheduler')
                     threading.Thread(target=drain, args=(dq, f), daemon=True).start()
                     break
-            time.sleep(55 + random.random() * 10)
     else:
         agent.inc_out = True
         while True:
diff --git a/tgapp.py b/tgapp.py
index 51483af..803ea39 100644
--- a/tgapp.py
+++ b/tgapp.py
@@ -1,9 +1,13 @@
 import os, sys, re, threading, asyncio, queue as Q, socket, time
 sys.path.insert(0, os.path.dirname(os.path.abspath(__file__)))
 from agentmain import GeneraticAgent
-from telegram import Update
-from telegram.ext import ApplicationBuilder, MessageHandler, CommandHandler, filters, ContextTypes
-from telegram.request import HTTPXRequest
+try:
+    from telegram import Update
+    from telegram.ext import ApplicationBuilder, MessageHandler, CommandHandler, filters, ContextTypes
+    from telegram.request import HTTPXRequest
+except:
+    print("Please ask the agent install python-telegram-bot to use telegram module.")
+    sys.exit(1)
 import mykey
 
 agent = GeneraticAgent()
@@ -89,8 +93,12 @@ if __name__ == '__main__':
     # Single instance lock using socket
     try:
         _lock_sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM); _lock_sock.bind(('127.0.0.1', 19527))
-    except OSError: sys.exit('Another instance is already running.')
-    if not ALLOWED: sys.exit('ERROR: tg_allowed_users in mykey.py is empty or missing. Set it to avoid unauthorized access.')
+    except OSError: 
+        print('[Telegram] Another instance is already running, skiping...')
+        sys.exit(1)
+    if not ALLOWED: 
+        print('[Telegram] ERROR: tg_allowed_users in mykey.py is empty or missing. Set it to avoid unauthorized access.')
+        sys.exit(1)
     _logf = open(os.path.join(os.path.dirname(__file__), 'temp', 'tgapp.log'), 'a', encoding='utf-8', buffering=1)
     sys.stdout = sys.stderr = _logf
     print('[NEW] New process starting, the above are history infos ...')