Parsing errors when loading the calendar file

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C#

Hi,

Using when i am loading the Vcalendar it is giving me parsing error. This is failing as the content inside should be with proper space. If i manually update with space it works fine. But is there any way to update the format of the Vcalendar file.
Error:
System.Runtime.Serialization.SerializationException: 'Could not parse line: '<br>''



Code:

using (var stream = FileEx.OpenRead(this.path))
{
var calendar = Ical.Net.Calendar.Load(stream);
}

What I have tried:

Tried to encode html using below code but still getting the error "System.Runtime.Serialization.SerializationException: 'Could not parse line: '<br>''
"

StreamReader reader = new StreamReader(@"D:\ICS\2.ics");
        string key = reader.ReadToEnd();

       
        char[] chars = System.Web.HttpUtility.HtmlEncode(key).ToCharArray();

       
        byte[] array = Encoding.ASCII.GetBytes(chars);
                using (MemoryStream stream = new MemoryStream(array))
                {
                    var calendar = Ical.Net.Calendar.Load(stream);
                }