Pin Mode Error - Pi3, GPS GP-20U7 & Johnny-Five

Question

New to this Pi world and what not but I know some JS and am using the Johnny-Five library.

I used raspi-config to disable Serial/USB Console and Enabled Serial interface. I've also added enable_uart=1 config.txt.

Running cat /dev/serial0 from the command like outputs a stream of data from the GPS unit and seems to be doing it's job. Nonetheless, I'm having an issue with Pin 10 receiving data from the GPS Unit. When I run my code below it throws the error:

Error: Pin "10" does not support mode "other"

var five = require("johnny-five");
var Raspi = require("raspi-io");
var board = new five.Board({
  io : new Raspi({ enableSerial : true /* apparently required as per raspi-io docs */ })
});

    board.on("ready", function() {
        const gps = new five.GPS({
            pins : {
                    rx : 'P1-10',
                    tx : 'P1-8',
            }
    });

    gps.on("data", () => {
            console.log("position");
            console.log(" latitude  : ", this.latitude);
            console.log(" longitude : ", this.longitude);
            console.log(" altitude  : ", this.altitude);
            console.log("———————————————————————————————————");
    });

});