diff --git a/main.py b/main.py
index 712413a..2e01839 100644
--- a/main.py
+++ b/main.py
@@ -167,7 +167,7 @@ def on_ready_for_otp(e: Event, commandor: CommandorPage):
 
 
 def start_book():
-    start_slot_number = 18
+    start_slot_number = 1
     end_slot_number = 21
     for i in range(start_slot_number, end_slot_number + 1):
         card_pool.reset()
diff --git a/scheduler.py b/scheduler.py
index a5f1e95..46ce9c9 100644
--- a/scheduler.py
+++ b/scheduler.py
@@ -1,7 +1,7 @@
 import logging
 import sys
-from concurrent.futures import ThreadPoolExecutor, ProcessPoolExecutor
 
+from apscheduler.executors.pool import ThreadPoolExecutor, ProcessPoolExecutor
 from apscheduler.schedulers.blocking import BlockingScheduler
 
 from logs.AppLogging import init_logger