Hi All, im new here and really need some help, as no searching on the net has solved my issue.   I have an ultimaker 3 and can no longer level the bed manually or automatically.   Initially the error was too bigger difference between the print heads when there wasn't one.   If i went to calibrate the X/Y it would say Er45 check ultimaker.com/ER45-but the page link is broken.   After the latest firmware update, I did a diagnostic on the machine, the on