The Original Prusa MK4/MK3.9 electronic boards have memory: the printer manages its allocation autonomously. In case of an issue in memory management that affects an LED animation, the printer will show the message "Memory allocation failed for scheduled LED animation"
Error name: LED Memory Error
Error code: #13529 (MK4) #21529 (MK3.9)
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.