Solved

Unity issues on Chrome

What did you try to do?
Watch the race

What happened instead?
Couldn't watch it.

Did the problem happen while using wi-fi, mobile data, or both?
Wi-fi

Did the bug happen in the app, on PC, or both?
PC

What operating system is your PC?
Windows 10, Windows 7, Mac OS

Which browser did you experience the problem in?
Chrome 64bits v71.0.3578.98

Can the bug be reproduced?
Yes

Edit:

Hi, since weeks if not months ago, have been trying to watch the races as usual on Chrome, but now it shows the following message:
"An error occurred runing the Unity content on this page. See your browser JavaScript console for more ingo. The error was: Script error."

Which if you check shows the following:
Uncaught TypeError: Cannot read property 'buffer' of undefined
    at processDataJob (UnityLoader.js:4)
    at a.callback (UnityLoader.js:3)
processDataJob @ UnityLoader.js:4
a.callback @ UnityLoader.js:3

Configuration is the same I had when it worked fine, so there's no difference there.
Error happening on Chrome 64bits 71.0.3578.98.

PD: Please fix the post preform, its really limited, no room for descriptive titles, irrelevant questions, and nowhere to put the useful information, till posted and edited.

On UnityLoader.js shows the TypeError on line 2908 and 3292

Uncaught TypeError: Cannot read property 'buffer' of undefined
    at processDataJob (UnityLoader.js:formatted:3292)
    at a.callback (UnityLoader.js:formatted:2908)

2906            a.callback = function(e, t) {
2907                a.starttime = performance.now(),
2908                n(e, t)
2909            }

3290    processDataJob: function(e, t) {
3291        var r = UnityLoader.Job.result(e, "downloadData")
3292          , n = new DataView(r.buffer,r.byteOffset,r.byteLength)
3293          , o = 0
3294          , a = "UnityWebData1.0�";

As said, issue only showing on Chrome (ie is fine), both systems 
Chrome 64 / Chrome 32
W10 64 / W7 32 respectively
16gb / 4 gb ram