new.html

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Form one</title>
    <style>
        body
        { 
            background-color: #414141;
            color: #fff;
        }
    </style>
</head>
<body>
    <h1>Forms in HTML</h1>
    <form action="url" method="GET" accept-charset="UTF-8" autocomplete="off" enctype="">
        <label for="fname">First Name:</label>
        <input type="text" placeholder="Enter your first name" name="" value="rima" id="fname">
        <input type="reset" value="Reset">
        <label for="lname">Last Name:</label>
        <input type="text" placeholder="Enter your last name" name="" id="lname">
        <br>

        <label for="fname">Password:</label>
        <input type="password" placeholder="Enter your password" name="" id="">
        <br>

        <label for="fname">Week:</label>
        <input type="week" name="" id="">
        <br>
//Tapu here you write the wrong code , you not define the id here that's why its give the error like this , but now its work properly .
                <label for="editor">Select your editor:</label>
                 <select name="editors" id="editor">
            <option value="vs code">vscode</option>
            <option value="subline">subline</option>
        </select>


        <label for="editor">Choose your editor:</label>
        <input list="editors" name="editor">
        <datalist id="editors">
            <option value="vscode">
            <option value="subline">
        </datalist>
        <br>

        <input type="hidden" name="">

        <button type="submit">OK</button>
        

    </form>
</body>
</html>