date parsing doesn't seem to work

[gurugeek]

I have a form

  router.get("/addpage") { _, response, _ in
        let title = ["title": "Adminpage", "date":Date()] as [String : Any]
        try response.render("addpage.stencil", context: title)
    }

and the relevant form

<form class="mui-form" method="POST">
        <legend>{{title}}</legend>
           <a href="/007/admin"> Back to Admin home </a>
           
     <div class="mui-textfield">
         <input type="text" id="title" name="title" placeholder="Enter page title/slug"
         <br>
         
         <div class="mui-textfield">
                <input type="text" id="date" name="date" value={{date}}"
                <br>


         <textarea class="editable" id="body" name="body"></textarea>
         <br>
         <button type="submit"  class="mui-btn mui-btn--raised">Save</button>
     </div>
      <input type="hidden" id="id" name="id" value="0" >
 </form>

my post route 
 router.post("/addpage") { request, response, _ in
        let page = try request.read(as: Page.self)
...

my struct is

struct Page: Codable, QueryParameter {
    var id: Int
    var title: String
    var body: String
    var date: Date
}

the error I receive is

[2019-12-10T10:38:49.491+01:00] [VERBOSE] [QueryDecoder.swift:128 decode(_:)] fieldName: id, fieldValue: Optional("0")
[2019-12-10T10:38:49.491+01:00] [VERBOSE] [QueryDecoder.swift:128 decode(_:)] fieldName: title, fieldValue: Optional("eee")
[2019-12-10T10:38:49.491+01:00] [VERBOSE] [QueryDecoder.swift:128 decode(_:)] fieldName: body, fieldValue: Optional("ee")
[2019-12-10T10:38:49.491+01:00] [VERBOSE] [QueryDecoder.swift:128 decode(_:)] fieldName: date, fieldValue: Optional("2019-12-10")
[2019-12-10T10:38:49.492+01:00] [ERROR] [QueryDecoder.swift:332 decodingError()] Could not process field named 'date'.
[2019-12-10T10:38:49.493+01:00] [ERROR] [RouterMiddlewareWalker.swift:72 next()] dataCorrupted(Swift.DecodingError.Context(codingPath: [CodingKeys(stringValue: "date", intValue: nil)], debugDescription: "Could not process field named \'date\'.", underlyingError

I assume is because the format of date is wrong (but I see no other way to get the date to the add form template ? but also if date is null it still throws an error.