X-Amz-Expires should be a number

[bdalpe]

Calling the presignedUrl function without including the optional expiry parameter incorrectly sets the URL query string to include a value X-Amz-Expires=undefined instead of the default 7 day expiration.

AWS S3 returns the following error: X-Amz-Expires should be a number

This error appeared in version 8.0.1.