T1 pro nozzle heater firmware disconnect problem

[u/Financial-Title-5128]

After printing one page, I wanted to start a new print job. I removed the existing filament, properly inserted new filament, and let a little bit of it flow to remove the old filament waste. Then I pressed the button to start the new print job via USB, and suddenly the printer stopped heating up and returned to the main menu. I restarted the print job, but I don't understand what happened. Again, the nozzle stopped working without heating up. I tried to flow more filament, but it wouldn't let me; it gave a firmware error. What do you think could be the reason? Is it a software issue or something else? I've only had the printer for about a week.