Hi - this looks like a known issue on some versions of the software. There is a documented workaround that involves clearing user preferences in one of the services in use by the web application. If you contact technical support, they can supply the details you need to correct this issue.
Need to connect to databases in SAS Viya? SAS’ David Ghan shows you two methods – via SAS/ACCESS LIBNAME and SAS Data Connector SASLIBS – in this video.