Create session : Invalid token format error

[jasontay001]

Hi,

I registered a new vonage account and cloned this repo and added my api key and secret into the .env then npm install and npm start. When i visit the localhost:8080/session i am getting the following error
"error": "createSession error:Error: Failed to createSession. Error: An authentication error occurred: (403) {\"code\":-1,\"message\":\"Invalid token format\",\"description\":\"Invalid token format\"}" }

Anything i missed?