AEG CG 6400 Water next to brewing flask

Hello!
I have the following problem with my AEG CG 6400:
The machine ran normally until 2 weeks ago, suddenly water ran into the collection container and also into the pomace container when switching on and heating up. To the right of the brewing piston you can also see the water track.
Now I have already replaced the large seal for the brewing piston and the two seals for the brewing unit, without success.

Can anyone else give me a hint?

Greeting from the stormy and rainy East Frisia

AEG Caffe Grande CG 6400

Hello from the neighbouring country
Overtake the upper brewing head.

Otherwise PN.

MfG Chris

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