Bosch Disswasher won’t finish cycle

Hi all!

I have a Bosch sgi47m25eu dishwasher with the following problem:

It starts the cleaning program fine; sucks the water in, then drains normally.
When the rinse cycle starts it doesn’t suck in enough water in but the rinsing program continues and the tries to pump the water out the spray arms. But because there is not enough water in it, the pump just rotates and the cycle never finishes.

If at this point I put some extra water manually in the machine the program finishes normally.

And suggestions are appreciated!

Thanks!
Peter