mac os validation failure for ReCAPTCHA enterprise [closed]

We implemented ReCAPTCHA enterprise on mac os using token base system , using a WebView to run the JavaScript.
When validation the Token from backend it show following error.

tokenProperties": {
        "valid": false,
        "invalidReason": "BROWSER_ERROR",
        "hostname": "",
        "androidPackageName": "",
        "iosBundleId": "",
        "action": "",
        "createTime": "1970-01-01T00:00:00Z"
 }