Understanding problem: MLKit Bird Classifier

[Westec]

I tested the vision-quickstart app and am interested in bird classification. 
There I get results as shown in the picture.
 
Now I tried to convert the code into Python for Raspberry Pi with the same Model 
and I get the following message: 
ValueError: Mobile SSD models are expected to have exactly 4 outputs, found 1.
What am I doing wrong? The Outputs also work on Android!
Can someone tell me what to do to get the model running on the RPi?
THX