Currently kazv downloads the file from the endpoint /_matrix/media/v3/download/{serverName}/{mediaId}, which has been deprecated and will be removed in the future.

matrix.org has removed this endpoint and uses /_matrix/client/v1/media/download/{serverName}/{mediaId} instead.

https://spec.matrix.org/v1.14/client-server-api/#get_matrixmediav3downloadservernamemediaid

https://spec.matrix.org/v1.14/client-server-api/#get_matrixclientv1mediadownloadservernamemediaid