Bad Request error from request - NameConflictBehavior must be fail, replace or rename

How do we resolve this? First, perhaps ask for more details about SharePoint because it has so many forms (and I’m not an expert). Is this cloud-based Sharepoint, maybe as part of OneDrive for Business as was mentioned in 2018 (or maybe Office 365 Business)? I don’t know if a test account is possible…

Alternatively, test builds might be possible, but there are no official nightly builds. Canary is as needed. This would be a good issue to clear up soon, because it may be the final block to going towards Beta…