You are working and switching between the Supernova or “Online journals” search engines and other sites or documents, when all of a sudden, having launched a new search request, the "A system problem has occurred" window appears:
What happened and what can you do?
It is a time-out, the search engine has been inactive for too long. Even if you click on the suggested link, you will encounter the same problem.
If the problem continues, you can submit a ticket.