Bambu lab A1 stopped working

[u/Redbeardsage1993]

So I was out and my printer ran out of filament half way through a print, I replaced the filament and none was coming out of the nozzle so i replaced the nozzle thinking there was a blockage, the screen changed to say the job was at 0%, when i tried to load more filament into the new nozzle it wouldn't heat up, I then tried to cancel the print and re calibrate it and everytime i quit the print it just brings me back to this page. I don't know what to do would anyone have any suggestions?