FileBasedProject publishing from Studio 2021 to GroupShare 2017

We currently have a platform where we have developed a Trados Studio API based system which creates and publishes projects to GroupShare.  In the process of trying to migrate to the cloud platform we are trying to make our application work with Studio 2021 (currently works with Studio 2019) and publish projects to GroupShare 2017.  Everything works fine until the FileBasedProject.PublishProject() call.  The status result message is "Failed to publish" but we don't see any error details returned and no exception thrown.

Is Studio 2021 SR2 allowed to publish to GroupShare 2017?  We realize this is a little out of sync but we need this to transition our processing from GroupShare to the cloud-based platform with Studio 2021.