@manish verma Thanks for reaching out and apology for the inconvenience due to this issue. Can you please confirm which FTP action you are using for which you are observing the issue? 404 error generally means that the path doesn't exist, or it cannot be found. Please validate if this is not the case.
In case if you are still facing the issue then please share more details on error along with the screenshot/configuration of your action/trigger.