fix user not needed

api/serializers.py

@@ -19,10 +19,10 @@ class GroupSerializer(serializers.ModelSerializer):
 class AcquisitionSerializer(serializers.ModelSerializer):
     class Meta:
         model = models.Acquisition
-        fields = '__all__'
+        exclude = ['user']
 
 
 class TypeTrackingSerializer(serializers.ModelSerializer):
     class Meta:
         model = models.TypeTracking
-        fields = '__all__'
+        exclude = ['user']