On notification in the Epicenter Nodelet of receiving XP and using the link in the notification to open Node Tracker:
After updating Node Tracker the following error message appears:
Server Error (Error Id 3737426)!
An error has occured. It has been logged. Apologies for the inconvenience. If it persists, contact an administrator

No error is apparent (to me) and Node Tracker seems to work fine but since the server reports an error every time it is being passed along here.
Sunday, June 16, 2019 at 21:10:49 server time

Same as above but I noticed today that the error message appears as soon as Node Tracker is opened then remains after "Update" button is clicked. server time
Tuesday, June 18, 2019 at 0:43:14