Problem importing dataset
You can follow the below steps to load a json file,

First check whether the file is json or not using the following; https://jsonlint.com/. Once you are confirmed the file is a json, use the below code to read it.

with open("training_dataset.json") as datafile:
    data = json.load(datafile)
dataframe = pd.DataFrame(data)


I hope the above will help you.