UPDATE – 17 Oct 2019: After the most recent MacOS update for Catalina, the annoying message described below seems to have gone away.
If you recently upgraded to MacOS Catalina, you have likely encountered an error message when trying to accept the new iCloud Terms and Conditions.
There is a message in System Preferences under Apple ID that states: “To use iCloud on this Mac you must accept the new Terms and Conditions” as shown below.
When you click on the Terms and Conditions button, you’ll be given an option to read the new Terms and Conditions and agree to them. However, you may receive an ambiguous error message about a server error as shown below. This message appears only for a brief moment. The image below was captured using screen recording. You probably won’t be able to see it or read it otherwise.
It’s unfortunate that the error message is ambiguous and that it disappears quickly, because that leaves users wondering why the Terms and Conditions message keeps showing up after they have accepted the Terms and Conditions.
This is a situation similar to problems with the server errors during the Apple Card application process.
It seems that the Apple servers get overwhelmed with requests. Hopefully the server issues will be resolved with some load balancing approach to handle the many requests during product launches.
The maps below show the general location of recent visitors to this page to show the areas impacted by this issue.