Grinder Bean hopper

Moin, it's about a Siemens EQ6 s300
.the bean hopper has been completely empty at some point, since then always comes the error message that the container is empty, although this is filled. After the message you can then confirm that the container is full and get his coffee but it bothers a lot.
Maybe who has an idea.

Hi I also had the same problem. It sucks of course but send for repair. Expensive fun. Today I wanted to wait that the machine breaks off and lo and behold she hissed because she wanted to foam milk. Since I had thought gehts still. Now quickly the hose in the milk and off it went.
I could not believe it since then she does what she should???????? so the patience has paid off
When I read here the many requests because of errors I'm already skeptical
.
Expensive machine and then such a hassle.
Wanted to make something courage.