I just bought a printer and after 5-6 good prints it started doing this. after printing this last one that you se attached i can’t print almost anything. when it lays the outer layer it just cloths all filament around the nozzle and not laying anything on the bed. i tried recalibrating, replacing filament, different settings, even tried printing the default ok.gcode that was on the sd card without any success. what can it be wrong?