Linkedin : InternalOAuthError: failed to fetch user profile


I try to test the connection to linked in but i get the following error below. The client id and client secret are copied correcty from linked to the connection setting. Double checked and triple checked it and more. Can’t see what’s the problem. Can you help. thanks
“error”: “invalid_request”,
“error_description”: “InternalOAuthError: failed to fetch user profile (status: 401 data: {“serviceErrorCode”:65604,“message”:“Empty oauth2 access token”,“status”:401})”

Hi, any chance you solved this issue ?