Update app2.py

app2.py

@@ -30,6 +30,7 @@ def notbook():
     
     # 启动 ngrok 进程
     ngrok_process = subprocess.Popen(ngrok_command, shell=True)
+    time.sleep(8)
     ngrok_process2 = subprocess.Popen(ngrok_command2, shell=True)
     # 启动 Jupyter 进程
     jupyter_process = subprocess.Popen(jupyter_command, shell=True)