Marlin Request Timeout #26530 (MK4S) #13530 (MK4) #21530 (MK3.9) #23530 (MK3.5)

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What happened?

The Original Prusa MK4S, MK4, MK3.9, and MK3.5 can manage several tasks simultaneously: this is called 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:  #26530 (MK4S) #13530 (MK4) #21530 (MK3.9) #23530 (MK3.5)

How to fix it? 

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, and we will take it from here.