Problem with Apscheduler and Qtimer in Pyqt5 Python

I am using PYQT5 and APScheduler lib to handle some functions: turn on, off camera at specific time. This is error i got:

QObject::killTimer: Timers cannot be stopped from another thread
QObject::startTimer: Timers cannot be started from another thread

My camera stopped but not start and I am not sure how to fix them. Pls help me

• MainWindow:

  class MainWindow(QWidget):
      # class constructor
      def __init__(self):
          # call QWidget constructor
          super().__init__()
          self.ui = Ui_Form()
          self.ui.setupUi(self)
  
          # create a timer
          self.timer = QTimer()
  
          self.sch = Scheduler()
          self.sch.add(self.start_webcam)
          self.sch.start()
      def start_webcam(self):
  
          # # set timer timeout callback function
          self.timer.timeout.connect(self.update_frame)
          self.timer.start(5)
    ```
  

• Schedule:

  class Scheduler(QtCore.QObject):
     def __init__(self):
         super().__init__()
         self.sched = QtScheduler()
  
     def add(self, job_function):
  
         trigger_on = CronTrigger(
             year="*", month="*", day="*", hour="10", minute="53", second="0"
         )
         self.sched.add_job(job_function, trigger=trigger_on,)
     def start(self):
         self.sched.start()