Error Executing Post request! Received Error code:400

[EXJUSTICE]

Hi,

I've been successfully using the Emotion API in my android app for detecting facial emotions.
In an activity, everything works fine.

However, when moving the same processResults() (which invokes an AsyncTask as shown in the guiding code) method to an android background service aiming to take photos in the background, I get this error.

Can you tell me what the description for that error?