I can not receive any message from netlify form

Does any one can help me to fix this problem ? I think everything should be okey to works, but is still not. Here is my code.

Thank you so much.

<div style="text-align: left">
    <form name="contact" method="POST" data-netlify="true" netlify-honeypot="bot-field">
        <legend>Contact Form</legend>
        <div class="form-group">
            <label for="InputName">Name</label>
            <input type="text" class="form-control" id="InputName" name="name" placeholder="Name" required aria-label="Name" aria-describedby="InputName">
        </div>
        <div class="form-group">
            <label for="InputEmail">Email address</label>
            <input type="email" class="form-control" id="InputEmail" name="email" placeholder="Enter email" required aria-label="Email address" aria-describedby="InputEmail">
            <small id="emailHelp" class="form-text text-muted">We'll never share your email with anyone else.</small>
        </div>
        <div class="form-group">
            <label for="formFile">File input</label>
            <input class="form-control" type="file" id="formFile" name="file" required aria-label="File input" aria-describedby="formFile">
        </div>
        <div class="form-group">
            <label for="InputMessage">Message</label>
            <textarea class="form-control" id="InputMessage" name="message" rows="5" required aria-label="message" aria-describedby="InputMessage"></textarea>
        </div>
        <div class="text-center">
            <div style="margin: 10px 0; text-align: justify-all; font-weight: bold; font-size: 25px">
            <button type="submit" class="btn btn-primary">Submit</button>
            <button type="reset" class="btn btn-secondary">Reset</button>
            </div>
        <input type="hidden" name="bot-field" value="bot-field" />
        </div>
    </form>
</div> 

Hi @NING3739, welcome and thanks for the post.

Kindly read the troubleshooting forms guide below to see if it helps.

Let me know the outcome.
Thanks.