[ERROR] Cannot convert undefined or null to object

Hey guys, I have been having this weird issue when doing any attempt to login, whether by Google or through Facebook. What are the possible causes by this? I am testing on localhost.

Thank you!

Hey there! We would love to help you but definitely your description lacks a ton of information that would allow us to start debugging it. Any screenshots, other logs, information about the stack you use, etc. would be useful! Thanks

Hello, I really appreciate your fast answer, I was not sure of what kind of information I should be providing. I have attached the context logs below.

I am using auth0-spa for Vue.js.

{
  "body": {},
  "qs": {
"client_id": "hidden",
"redirect_uri": "http://localhost:8080",
"scope": "openid profile email",
"response_type": "code",
"response_mode": "query",
"state": "cUw5dVFGbUhyNzJWOXhHMjVIU2xIOEVkd3RFTTBId0ZSS1FDQnB1cmYwMg==",
"nonce": "TDhQQWxzRms3N35QeEdhYnR5VFJPTWM0NlR4MU5qeG1NdXZGNUtVeHVlUA==",
"code_challenge": "U39IxKLD3O1Vr6NvTUWoQH0aRebXpUbQFNcEIwrjer8",
"code_challenge_method": "S256",
"auth0Client": "eyJuYW1lIjoiYXV0aDAtc3BhLWpzIiwidmVyc2lvbiI6IjEuOC4xIn0="
  },
  "error": {
"message": "Cannot convert undefined or null to object",
"oauthError": "access_denied",
"type": "oauth-authorization"
  },
  "session_id": "tZMTt0cSmGjojo0lrt-eA3bNYkP86kfz"
}

Please do let me know if there is any more necessary information.