Learned D3 at Businessweek, started using Observable to do my job at Kensho, took time off to write notebooks about Mayans and Galton, moved to San Francisco to work for Observable. Now work for it remotely from the Berkshires where my wife runs Avaloch.
No, as you can see. The DatabaseClient function always succeeds in public notebooks. The error does not occur until you try to run a query that is uncached.