The Original Prusa XL is able to manage several tasks simultaneously (multithreading). In case of an issue related to multithreading, the printer will show the message "Marlin client could not send message to Marlin server and timeout was reached."
Error name: Marlin Request Timeout
Error code: #17530
Restarting the printer is expected to resolve the error, and this is not expected to occur again. In case a restart does not resolve it, please contact our customer support, we will take it from here.