@samlevy0515 Thank you for your advice. The issue has been successfully resolved.

@chris-annin The cause of the malfunction has been identified, and we were able to resolve the issue successfully. As you pointed out, the problem ...

Thank you for your response. We have already checked the coupler. As for the motor, it was ordered through a supplier around December 25th. ...

I have attached the relevant URL and the audio recording of the abnormal noise for your review