Jupyter Notebook not working on PYNQ-Z1 anymore

Hello, I have a problem concerning the PYNQ-Z1 board I’m working with right now. I build a new Base-Overlay in which i slightly modified the hdmi Block by adding a IP block that crops and resizes the receiving video stream. I then ran the new base overlay inside the jupyter notebook on the board. The first few times threw little errors I could deal with, but the last time, there was an error which caused the jupyter notebook to stop. After i rebooted the board, Juypter did not start with it. The blue LEDs that are supposed to blink according to the starting guide are also not blinking. When looking at the board via USB connection to the PC, it showed the following errors:

It would be very nice, if someone could help me with this problem.
Thank you in advance.

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Besides that, when looking if the jupyter service in general is working it shows the following error:

The problem was a defect SD card. After flashing a new image on it, the board worked again.

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