The token must be processed in the FACEIT popup

When using the FACEIT JS SDK when i get redirect to the “redirect page” there is an error in console “The token must be processed in the FACEIT popup”, but it still authentificates. What does this error mean?

Also, the FACEIT.init callback is not being fired, probably related to this?

var faceit_initParams = {
                client_id: 'xxxx-xxxxx-xxxxx-xxxxx-xxxx',
                response_type: 'token',
                debug: true
            };


            FACEIT.init(faceit_initParams, faceit_callback);

I am using VUE JS.