PeakyBlinders

Hi, I'm currently trying to use the API to control remotely my Ultimaker 3 with a webpage. So, I use Ajax to make a request on the printer but it won't allow me to make the request. For the moment I try to check the validity of the id : function checkTicket(ticketId) { $.ajax({ type: 'GET', url: 'http://192.168.1.120/api/v1/auth/check/' + ticketId, contentType: 'application/json', headers: { 'Accept': 'application/json' } } ).done(function (data, textStatus, jqXHR) { console.log(data); switch (data.message) { case "authorized": break; default: requestTicket(user.name); break; } }).fail(function (jqXHR, textStatus, errorThrown) { console.log(jqXHR); }); But I got an error : My request headers : Accept:*/* Accept-Encoding:gzip, deflate Accept-Language:en-US,en;q=0.9 Access-Control-Request-Headers:content-type Access-Control-Request-Method:GET Cache-Control:no-cache Connection:keep-alive DNT:1 Host:192.168.1.120 Origin:http://127.0.0.1 Pragma:no-cache User-Agent:Mozilla/5.0 (Macintosh; Intel Mac OS X 10_13_2) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/63.0.3239.108 Safari/537.36 Thanks for your help !