Jetbot problem where the screen goes off but the fan stays on when updating the package

Hello, I just operated JetBot whose main computing is Jetson Nano 4GB, I have flashed to 128GB sd card the required waveshare file. When I login and try to update and upgrade the package with ‘sudo apt update && upgrade -y’, the LED display goes off even though the fan is still on, I have also tried connecting to a monitor with hdmi and the hdmi is the same. Does this have anything to do with low battery and need to be charged? Do I have to charge it with a 18650 battery charger or just directly on the jetbot? or does this have something to do with corrupted files on the sd card, so I have to reformat it?

im sorry for editing the topic but i have another problem about JetBot, could you give me the solutions?

For Jetbot issue, suggestion to get the support from GitHub - NVIDIA-AI-IOT/jetbot: An educational AI robot based on NVIDIA Jetson Nano., thanks

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