I got same error "The mandatory 'access_token' parameter is missing.", but I understand where the problem is.
It's not enough to open /connect/userinfo address in browser. You should attach previously created token, so for /connect/userinfo request you should send a 'GET' request with attached token via Postman!
For further actions, you may consider blocking this person and/or reporting abuse
We're a place where coders share, stay up-to-date and grow their careers.
I got same error "The mandatory 'access_token' parameter is missing.", but I understand where the problem is.
It's not enough to open
/connect/userinfoaddress in browser. You should attach previously created token, so for/connect/userinforequest you should send a 'GET' request with attached token via Postman!