Ok, please forgive me but I have started playing with the Eikon Data API only today. I struggle. I struggle a lot more than I should for a modern product. I am using the Eikon Python API version 1.1.2

import eikon as ek
print(ek.__version__)

import logging
import http.client

http.client.HTTPConnection.debuglevel = 1

logging.basicConfig()
logging.getLogger().setLevel(logging.DEBUG)
requests_log = logging.getLogger("requests.packages.urllib3")
requests_log.setLevel(logging.DEBUG)
requests_log.propagate = True

if __name__ == '__main__':
    ek.set_app_key('084xxxx')

The output is

1.1.2
INFO:pyeikon:Set App Key: None
DEBUG:urllib3.connectionpool:Starting new HTTP connection (1): localhost:9000
send: b'GET /api/v1/data HTTP/1.1\r\nHost: localhost:9000\r\nUser-Agent: python-requests/2.22.0\r\nAccept-Encoding: gzip, deflate\r\nAccept: */*\r\nConnection: keep-alive\r\nx-tr-...

DEBUG:urllib3.connectionpool:http://localhost:9000 "GET /api/v1/data HTTP/1.1" 307 40
reply: 'HTTP/1.1 307 Temporary Redirect\r\n'
header: Access-Control-Allow-Origin: *
header: X-ID: 17264.18
header: Location: /api/
header: Vary: Accept
header: Content-Type: text/plain; charset=utf-8
header: Content-Length: 40
header: Date: Fri, 08 May 2020 19:54:48 GMT
header: Connection: keep-alive
send: b'GET /api/ HTTP/1.1\r\nHost: localhost:9000\r\nUser-Agent: python-requests/2.22.0\r\nAccept-Encoding: gzip, deflate\r\nAccept: */*\r\nConnection: keep-alive\r\nx-tr-applicationid: ...

reply: 'HTTP/1.1 500 Internal Server Error\r\n'
header: Access-Control-Allow-Origin: *
header: X-ID: 17264.19
header: Vary: Accept
header: Content-Type: application/json; charset=utf-8
header: Content-Length: 89
header: ETag: W/"59-ZI4k3svYPlZanax9D9COXoCzgcA"
header: Date: Fri, 08 May 2020 19:54:48 GMT
header: Connection: keep-alive
send: b'POST /api/handshake HTTP/1.1\r\nHost: localhost:9000\r\nUser-Agent: python-requests/2.22.0\r\nAccept-Encoding: gzip, deflate\r\nAccept: */*\r\nConnection: keep-alive\r\nx-tr-applicationid: ….\r\nContent-Type: application/json\r\nContent-Length: 113\r\n\r\n'
send: b'{"id": "Profile.py_handshake[]", "client": {"id": "EikonPython", "version": "1.1.2", "supportedApiVersion": "1"}}'
reply: 'HTTP/1.1 400 Bad Request\r\n'
header: Access-Control-Allow-Origin: *
header: X-ID: 17264.20
header: X-Request-Id: 5c4c3392-a9e1-41a9-8bdd-b558245fb4ce
header: Content-Type: text/html; charset=utf-8
header: Content-Length: 29
header: ETag: W/"1d-dBJHQM36p6JwbM9yZqLeYlV64ds"
header: Date: Fri, 08 May 2020 19:54:48 GMT
header: Connection: keep-alive
DEBUG:urllib3.connectionpool:http://localhost:9000 "GET /api/ HTTP/1.1" 500 89
INFO:pyeikon:Response : 500 - {"code":500,"message":"Cannot find module \".\"","statusMessage":"Internal Server Error"}
INFO:pyeikon:Port 9000 was retrieved from .portInUse file
INFO:pyeikon:Try to handshake on url http://localhost:9000/api/handshake...
DEBUG:urllib3.connectionpool:http://localhost:9000 "POST /api/handshake HTTP/1.1" 400 29
INFO:pyeikon:Response : 400 - Handshake payload is invalid.
INFO:pyeikon:Set Proxy port number to 9000
INFO:pyeikon:Checking port 9000 response : 500 - {"code":500,"message":"Cannot find module \".\"","statusMessage":"Internal Server Error"}
INFO:pyeikon:Port 9000 was retrieved from .portInUse file
INFO:pyeikon:Try to handshake on url http://localhost:9000/api/handshake...
INFO:pyeikon:Response : 200 - ...

INFO:pyeikon:Application ID: 084...
INFO:pyeikon:Port 9000 on local proxy was detected