error_type: TUnion<
[
TUnion<
[
TLiteral<"access_denied">,
TLiteral<"invalid_client">,
TLiteral<"invalid_grant">,
TLiteral<"invalid_request">,
TLiteral<"invalid_scope">,
TLiteral<"server_error">,
TLiteral<"temporarily_unavailable">,
],
>,
TLiteral<"insufficient_scope">,
TLiteral<"invalid_token">,
],
> = ...