Freeboard is one of these things that works really well and you want to bite the back of your hand when you get stuff working.
I had this issue though when developing some local web services with SparkJava and testing them on my local machine with localhost
I was using Chrome. Seems like Chrome doesnt support CORS on localhost. I used IE and Edge and it worked. I was building some simple web services and Java and by adding the following headers it worked fine.
res.header(“Access-Control-Allow-Credentials”,” true “);
res.header(“Access-Control-Allow-Methods”,” OPTIONS, GET, POST”);
res.header(“Access-Control-Allow-Headers”, “Content-Type, Depth, User-Agent, X-File-Size, X-Requested-With, If-Modified-Since, X-File-Name, Cache-Control”);