An error occurred when fetching client data for Lock: Timed out

I’ve been running this app in production now for a couple of years, but today the login panel froze up. When I set a breakpoint for uncaught exceptions, I get the following message:

Error: Error: An error occurred when fetching client data for Lock: https://cdn.eu.auth0.com/client/{my client ID}.js?t{a timestamp I guess?} timed out
at https://cdn.auth0.com/js/lock/11.3/lock.min.js:9:8330

I’ve checked the https://status.auth0.com/ page, and it says no problem.
I’ve also googled the message and came to the following forum case: Getting an error when fetching client data for Lock - #2 by jmangelo
This suggests that the clientID the app asks for and the clientID configured in Auth0/Applications may differ, but they don’t.

What can I do?

The problem resolved itself. I must conclude that the Auth0 team did some maintenance which halted our services for a short period.