Hey there @rjourdan_net, I wanted to follow up and find out if this solution would work for your situation that dives into crafting a custom error page. Please let me know if you have any questions or if this helps you in your pursuit. Thanks!
If you configure a redirection for the error page then the configured URL should receive the information about the error event through query parameters. In particular, the information you mentioned should be available in
erroranderror_descriptionparameters if I recall correctly.
Details of error when redirecting to custom error page