I am getting the following error, while trying to run react-sdk-release-24.2.10 Any help would be appreciated  sdk-config.json

"authConfig":{
  "mashupClientId": "<client-id-from-pega>",
  "portalClientId": "<client-id-from-pega>"
},
"serverConfig": {
  "infinityRestServerUrl": "<web-site-name>/prweb",
  "sdkContentServerUrl": "http://localhost:3502/auth.html"
},
"dxcbConfig": {
  "publishAccess": {
    "grantType": "authCode",
    "redirectUri": "http://localhost:3502/auth.html"
  }
}