HomeDocumentationOMGF (Pro) - TroubleshootingOMGF’s API (wp-json/omgf/v1/download) returns a 406 (Handle not provided) error. OMGF’s API (wp-json/omgf/v1/download) returns a 406 (Handle not provided) error.By Daan van den Bergh / 21 October 2021 Up until v5.0.0 OMGF used a custom API to download fonts. This API is discontinued as of v5.0.0, so if you’re getting this error, update to the latest version.