The URL of a private object has a validity period. The sum of the current timestamp and the expiration time of the signed URL cannot exceed 9223372036854775807. If the sum exceeds the preceding value, an error is reported. If the current timestamp is 1643341269, the expiration time of the signed URL cannot exceed 9223372035211434538.
If you do not want objects to expire, you can set the URLs of objects to public-read. However, this method is not safe and is not recommended. For more information, see Object ACL.