MYOB.AccountRight.SDK.ApiValidationException 400 Bad request https://secure.myob.com/oauth2/v1/authorize

Has something happened to the above url recently?

I am using the SDK

The following code fails on the await.

        public async t.Task<CompanyFile[]> GetCompanyFiles(ApiConfiguration configuration, IOAuthKeyService authKeyService)
        {
            var cfsCloud = new CompanyFileService(configuration, null, authKeyService);
            // Await the SDK call and avoid capturing the UI context to prevent deadlocks
            return await cfsCloud.GetRangeAsync().ConfigureAwait(false);
        }