有时候，当我的应用程序尝试通过身份验证调用访问它时，我会从Linkedin API收到错误消息。任何人都知道是什么原因以及如何解决这个问题？
ERROR: Error occured while trying to authenticate: Failed to obtain OAuth 2.0 access token from https://www.linkedin.com/uas/oauth2/accessToken!
HTTP status: 999, message: <html>\n<head>\n
<script type="text/javascript">\n window.onload = function()\n {\n
var cookies = document.cookie.split('; '); \n for (var i = 0; i < cookies.length; i++)\n {\n var fields = cookies[i].split('='); \n if (fields.length == 2)\n
{\n var name = fields[0].replace(/\s/g, ''); \n
if (name == 'denial-reason-code')\n {\n
document.getElementById('denialReasonCodes').textContent = fields[1]; \n }\n
if (name == 'denial-client-ip')\n {\n document.getElementById('denialIp').textContent = fields[1]; \n }\n }\n }\n
document.getElementById('denialUrl').textContent = document.location; \n
document.getElementById('denialTime').textContent = (new Date()).toString(); \n