Hi, we are trying to integrate umbraco with our membership software iMIS. for event booking. We created a view file for view the details of the events

Here is the view file code

@model Events.Models.EventRegistrationModel

@using ClientDependency.Core.Mvc @{ Html.RequiresJs("~/scripts/events.js"); }

@using (Html.BeginUmbracoForm

if (Model.EventDetails.EventFull)
{
    <p class="error">This event is now full, please contact the administration office if you have any queries.</p>
}
else if (Model.EventDetails.EventClosed)
{
    <p class="error">@Model.EventDetails.CutOffMessage</p>
}
else if (!Model.EventDetails.CanRegister)
{
    <p class="error" style="text-align: center;"><strong>Please <a href="#" onclick="HighlightLogin(); return false;">log in</a> to register for this event.</strong></p>
    <p class="error" style="text-align: center;"><strong>Non-members please <a href="/new-account">create a new account</a> if you do not have a login.</strong></p>
}

if (Model.EventDetails.EventPhoto.Length > 0)
{
    <img class="EventLogo" src="data:image;base64,@System.Convert.ToBase64String(Model.EventDetails.EventPhoto)" />
}
<p class="EventDescription">@Html.Raw(Model.EventDetails.EventDescription)</p>

<p class="EventAddress">@Html.Raw(Model.EventDetails.EventAddress)</p>
<p class="EventDirections">@Html.Raw(Model.EventDetails.EventDirections)</p>
<p>&nbsp;</p>
<div class="buttons">
    @if (Model.EventDetails.CanRegister && (!Model.EventDetails.EventFull) && (!Model.EventDetails.EventClosed))
    {
        if (Model.EventDetails.IsCompanyAdministrator)
        {
            <input class="EventButton NextButton pure-button pure-button-primary" type="submit" name="btnRegisterMe" value="Register Me">            
            <input class="EventButton NextButton pure-button pure-button-primary" type="submit" name="btnRegisterGroup" value="Register Colleagues">
        }
        else
        {
            <input class="EventButton NextButton pure-button pure-button-primary" type="submit" name="btnRegister" value="Register">
        }
    }
    else
    {
        <input class="EventButton NextButton pure-button pure-button-primary" type="submit" name="btnRegister" value="Register" disabled="disabled">
    }
</div>

@Html.Hidden("ser_model", new Microsoft.Web.Mvc.MvcSerializer().Serialize(Model))

}

And a screenshot of the error:

Am I missing something in the view file? or is it something in the surface controller?

Please help, I would really appreciate that