Sure! Here is a question about the solution to the M126 error you mentioned:

What are the possible causes of the M126 error, and what steps can be taken to correct the issue with the nozzle 1&2-Z axis origin sensor abnormality in the K
The solution for M126-Nozzle 1&2-Z axis origin sensor abnormality (PLC2-X0, X2) involves calibrating the Z-axis sensors and adjusting the nozzle