Welcome to the community, @Dolapo_Amusan! :grinning_face_with_big_eyes: I don’t connect to Google Sheets regularly, but I ran a test the other day and encountered some similarly odd issues when trying to establish the connection. Aside from a reboot (which sometimes helps to fix small problems if the browser has been open for a while), you might try disabling various extensions in Chrome and see if that helps. Other than that, I’m not sure what else to recommend.
Thanks @Justin_Barrett for the suggestions. Unfortunately none of them worked. Updated my Chrome, disabled all extensions and switched to my MacBook Pro but still got the same error. Switched from Chrome to Brave browser, and it persisted. Occasionally I get a 400 error (The server cannot process the request because it is malformed. It should not be retried. That’s all we know) with the image of a distraught robot :upside_down_face: !