error 406 not acceptable for login api

Mohamed

i have an issue and want help i try to use sonicwall api version 6.5 and when i try to use basic auth api it give me ( error 406 not acceptable) but i am sure i make the request with acceptable header and this my code :

def login(tenant_ip,port,cred):   
url = "https://{0}:{1}/api/sonicos/auth".format(tenant_ip,port)
    headers = {        'Authorization': 'Basic ' + cred, 'Accept': 'application/json'        }   
try:       
response = requests.request("POST", url, headers=headers, verify=False)   

    response.raise_for_status()        

return {            'success': True,            'data': response.json()        }   

except requests.exceptions.RequestException as e:       

txt_res = None       

if hasattr(e,'response') and e.response is not None:           

txt_res = e.response.text       

return {            'success': False,            'error': str(e),            'response_text': txt_res        }