Simple Python Query Failure

I'm trying to use a python script to access a view in SumoLogic but it is failing with a bad handshake error. Can anyone see where I'm going wrong? I can't find an example on this forum, but if there is one please let me know!

My code:

import requests

url = 'https://api.eu.sumologic.com/api/v1/search/jobs'

proxy_user= '' #username removed
proxy_pass='' #password removed 
proxy_host='' #host removed

proxy_url='http://'+proxy_user+':'+proxy_pass+'@'+proxy_host

proxies={
'http':proxy_url,
'https':proxy_url
}

sumo_id = '' #ID removed
sumo_key = '' #key removed

parameters = {
    'query': '_view=view_name authenticated_session=1 | limit 1',
    'from': '2021-01-26T00:00:01', 
    'to': '2021-01-26T23:59:59',
    'timeZone': 'GB'
} 

resp = requests.post(url, data=parameters, proxies=proxies, auth=(sumo_id,sumo_key))
resp.text

Error:

SSLError: ("bad handshake: Error([('SSL routines', 'tls_process_server_certificate', 'certificate verify failed')])",)

Thank you.