Cannot delete or rename folder from a external google cloud storage

hello

i have a nextcloud instance 21.0.4
i add externage storage from google cloud storage , as they arwe S3 compliant
it works i can create files and remove it
but i have error when i try do delete or remove folder
Aws\S3\Exception\S3Exception: Error executing “DeleteObjects” on “https://*****.storage.googleapis.com/?delete”; AWS HTTP error: Client error: POST https://*****.googleapis.com/?delete resulted in a 400 Bad Request response: <?xml version='1.0' encoding='UTF-8'?>InvalidArgumentInvalid argument.

Ca (truncated…) InvalidArgument (client): Invalid argument. - <?xml version='1.0' encoding='UTF-8'?>InvalidArgumentInvalid argument.
Cannot create buckets using a POST.

any idea

thanks so much