HLS Stream OneTimePassword (GetHLSToken from 511nj.org) - api

Question

For research purposes, we analyzed and extracted large-scale traffic data from 511nj cameras. Starting from 2020, it adds an OTP(one-time password) to the video link, which is requested by the website API: https://511nj.org/api/client/camera/getHlsToken?Id=2&rnd=202205281151, as observed from the network traffic. However, the website itself gets a response of 200 with a valid token, while accessing it by myself gets a response of 401, which indicates an unauthorized request. What makes me confused is why I can get the camera feed with the OTP through the website, but can't access the api. Is there a solution?
Failed attempt:
requests.get('https://511nj.org/api/client/camera/getHlsToken?Id=2&rnd='+datetime.datetime.now().strftime('%Y%m%d%H%M')).json()
20220601 Update: Modification has been made based on #Brad 's comment. However, the error message now turns into "An error has occurred". Please help!
def GetOTP():
import requests
import json
import datetime
Now = datetime.datetime.now()
DT = Now.strftime('%Y%m%d%I%M%S')
DT24 = Now.strftime('%Y%m%d%H%M')
Enigma = dict(zip(map(str,range(0,10)),('2','1','*','3','4','5','6','7','8','9')))
cookies = {
'ReloadVersion': '112',
'_ga': 'GA1.2.335422978.1653768841',
'_gid': 'GA1.2.721252567.1653768841',
}
headers = {
'authority': '511nj.org',
'accept': 'application/json, text/plain, */*',
'accept-language': 'en-US,en;q=0.9',
'referer': 'https://511nj.org/Scripts/Directives/HLSPlayer.html?v=V223',
'responsetype': "".join([Enigma[key] for key in DT[4:6]])+'$'.join([Enigma[key] for key in DT[6:8]])+'$'.join([Enigma[key] for key in DT[:4]])+'#'+Enigma[DT[9]]+"!".join([Enigma[key] for key in DT[10:12]])+"!"+DT[-2:]+"#PK",
'sec-ch-ua': '" Not A;Brand";v="99", "Chromium";v="102", "Google Chrome";v="102"',
'sec-ch-ua-mobile': '?0',
'sec-ch-ua-platform': '"macOS"',
'sec-fetch-dest': 'empty',
'sec-fetch-mode': 'cors',
'sec-fetch-site': 'same-origin',
'user-agent': 'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/102.0.5005.61 Safari/537.36',
}
params = {
'Id': '2',
'rnd': DT24,
}
Response = requests.get('https://511nj.org/api/client/camera/getHlsToken?Id=2&rnd='+DT24, headers=headers,cookies=cookies,params=params).json()
print("".join([Enigma[key] for key in DT[4:6]])+'$'+''.join([Enigma[key] for key in DT[6:8]])+'$'+''.join([Enigma[key] for key in DT[:4]])+'#'+Enigma[DT[9]]+"!"+''.join([Enigma[key] for key in DT[10:12]])+"!"+DT[-2:]+"#PK")
print(params['rnd'])
print(Response)
return Response['Data']