Python runs_ After preprocess. py, the relevant path information in step1. JSON is [],

[hjifei]

Hi, After I successfully started the virtuoso service, Python ran_ After preprocess. py, the relevant path information in step1. JSON is [].
For example, the data in the step1. JSON file looks like this [{"question": "what is the name of justin bieber brother", "topic_entities": ["m.06w2sn5"], "answers": ["m.0gxnnwq"]}, []]
I also placed the 'freebase rdf latest literal fixed' file in the 'virtuoso_db' folder
Do you know how to solve this problem～