In reply to Rick Medlin.

Make sure the reportUri="" string contains the leading '/reports/reports/', I believe VA SDK would work if all settings are correct.

If you are sure the report is accessible by guest, check if the needed configuration is set on the SAS server. Please refer to the 'SAS VIYA SETUP' section in the https://support.sas.com/content/dam/SAS/support/en/sas-global-forum-proceedings/2020/4309-2020.pdf.