A Microsoft online analytical data engine used in decision support and business analytics, providing the analytical data for business reports and client applications such as Power BI, Excel, Reporting Services reports, and other data visualization tools.
Hi,
Actually, this kind of info could not show the cause of the issue. I suggest you try upgrade you server to newest 5001092 Cumulative update 17 (CU17) for SQL Server 2016 Service Pack 2
If the issue still exists, you could try contect MS support and open a ticket to fully investigate the SSAS server.
Regards,
Lukas