Everything is being done in the Refinitiv Codebook through Jupyter Notebooks

Code:

import eikon

eikon.get_data(['US0378331005','US345370CS72','F5YUSAX=R', '.SPX'],

['TR.AssetCategoryCode','TR.AssetCategory'])

Error:

---------------------------------------------------------------------------
AttributeError                            Traceback (most recent call last)
/tmp/ipykernel_107/42610158.py in <module>
      1 import eikon
----> 2 eikon.get_data(['US0378331005','US345370CS72','F5YUSAX=R', '.SPX'],
      3             ['TR.AssetCategoryCode','TR.AssetCategory']) 
/opt/conda/lib/python3.8/site-packages/eikon/data_grid.py in get_data(instruments, fields, parameters, field_name, raw_output, debug)
    188         payload = {
  'requests': [payload]}
    189 --> 190     result = eikon.json_requests.send_json_request(_endpoint, payload, debug=debug)
    191     192     if result.get('responses'):

/opt/conda/lib/python3.8/site-packages/eikon/json_requests.py in send_json_request(entity, payload, debug)
     86             udf_request = {
  'Entity': {
  'E': entity, 'W': data} }
     87             logger.debug('Request:{}'.format(udf_request))
---> 88             response = profile._desktop_session.http_request(url=profile.get_url(),
     89                                                              method="POST",
     90                                                              headers={'Content-Type': 'application/json', 
AttributeError: 'NoneType' object has no attribute 'http_request'