Deprecated python code warning

[Quasar985]

Prerequisites

• Put an X between the brackets on this line if you have done all of
  the following:

  • Running the latest version of Constellation

  • Attached the Support Package via Help >
    Support Package

  • Checked the FAQs:
    https://github.com/constellation-app/constellation/wiki/FAQ

  • Checked that your issue isn’t already filed:
    https://github.com/constellation-app/constellation/issues

  • Checked that there is not already a module that provides the
    described functionality:
    https://github.com/constellation-app/constellation/wiki/Catalogue-of-Repositories

Description

Warning is thrown in constellation_client regarding the read_json function:
FutureWarning: Passing literal json to 'read_json' is deprecated and will be removed in a future version. To read from a literal string, wrap it in a 'StringIO' object.

Steps to Reproduce

1. Open graph

2. Start Jupyter Server

3. Run the following code:

import io
import os
import pandas as pd
import PIL.Image, PIL.ImageDraw, PIL.ImageFilter, PIL.ImageFont

# Also import some of the notebook display methods so we can display nice things.
#
from IPython.display import display, HTML, Image

# This is a convenient Python interface to the REST API.
#
import constellation_client

cc = constellation_client.Constellation()

df = cc.get_dataframe()
df.head()

Expected behaviour: No warnings are thrown.

**Actual behaviour:**Warning is thrown, regarding deprecated code

Reproduces how often: Always

[HolandCrick]

@Quasar985 Thanks to addressing the deprecated python code issue. Need bit more work on it. Pls see the error: