Saeco Incanto HD8917 / 09 - No coffee grinder - no coffee message

Hello,
More than a month after the end of the warranty, the coffee machine stopped working, the model as in the subject. I checked if something accidentally fell into the grinder that could damage it. It turned out that everything is "ok" - just the coffee.
So I took out all this element:

I extended the cables and started off the machine. Everything turned out to be nice without coffee. But as I have already put in a few grains, after a while the first better grain is blocked by the grain from the bottom basket (5). Interestingly, blocked grain causes an error on the display - no coffee.
What could be the reason? Engine or lower basket (26) with gear wheel (13)? Or maybe something else? How does the machine know that there is no coffee? In other coffee machines I noticed a Hall sensor connected to the motherboard. In this model I did not notice this sensor.
I also put some pictures of the mill.

The espresso machine reads the power consumption of the motor and on this basis the message about lack of coffee is displayed.

You checked item number 7? Most often he breaks off.

This item is actually damaged. As I mention, it will be ok to close.
Many thanks to you!