Debugging input and output

[Deninc]

Dear,
I have this issue of returning empty output:
curl -X POST --header "Content-Type: application/json" --data '{"input": "1 curry rice"}' localhost:1337/pipeline/predict
{"query_id":29,"output":"","default":false}

However, when I tested inside the model container:

>>> import cloudpickle
>>> func = cloudpickle.load(open('/model/func.pkl','rb'))
>>> func(["1 curry rice"])
['Boiled egg / fried egg + rice']

Any idea how I can inspect what's the actual input that is used in runtime?