Here's a potential question about this error:

What could be causing the M123-Nozzle 2 failure to pick up materials in this KM-ASSYM5-10 machine? What might lead to error ID 54 occurring multiple times in a row on this machine
The solution to the error M123-Nozzle 2 failed to pick up materials several times in a row is to check for any blockages or clogs in the nozzle, and to verify that the material you are trying