

why this happening ?
This happened suddenly.
At first I thought the nozzle was the issue, so I bought a new one and installed it.
But the problem is still there. Next, I need to open the extruder and remove the stuck part.
Then do another Auto Level.
After that, on the second print, this happens again.
I've now given the machine to a professional repair technician.
He says that after 6 hours of printing, the machine has no issues at all.