Esp32cam blinks flash-LED 5 times at boot (error code?)

Hi,
Does anyone know what it means when the Flash-LED of an ESP32CAM flashes 5 times when the board boots ?
I may have broken my ESP32cam and I suspect the flashing is some kind of an error code.
However, I can’t find any information about it on the internet
thank you in advance for any pointers,
chrisV