{ "error": "invalid_grant", "error_description": "Bad Request" }

[Ak]

I have come to the point where I have created the JWT (huffffff), however, every time I make the POST call using ajax, It throws me this error

 {

 "error": "invalid_grant",

 "error_description": "Bad Request"

}

What does this mean? 

Please hep !

[Ak]

How do I synchronize my server with NTP? Thats what I am getting from searching for this issue. I am using this code, but it seems to be giving errors

private static int[] GetExpiryAndIssueDate()

    {

        var utc0 = new DateTime(1970, 1, 1, 0, 0, 0, 0, DateTimeKind.Utc);

        var issueTime = DateTime.UtcNow;

        var iat = (int)issueTime.Subtract(utc0).TotalSeconds;

        var exp = (int)issueTime.AddMinutes(55).Subtract(utc0).TotalSeconds; // Expiration time is up to 1 hour, but lets play on safe side

        Console.WriteLine(iat);

        Console.WriteLine(exp);

        Console.ReadKey();

        return new[] { iat, exp };