TokenMismatchException in VerifyCsrfToken.php

Hello guys. I have a problem with my ajax POST request.

my head tah:

    <meta name="csrf-token" content="{{ csrf_token() }}">  

Here is my form:

       <form id="contentForm" action="/faq" method="POST">
             {{csrf_field()}}
                <colgroup>
                    <col width="20%" /><col width="80%" />
                </colgroup>  

                <tbody>   

                    <tr class="Field">
                        <th align="right" scope="row">First Name:*</th>                    
                            <td> 
                                <input type="text" class="textbox-big" tabindex="2" id="FirstName" maxlength="400" name="FirstName" required style="width: 200px" />
                            </td>                
                    </tr>      

                    <tr class="Field">                    
                        <th align="right" scope="row">Email Address:*</th>                    
                            <td>                        
                            <input type="text" required class="textbox-big" tabindex="9" id="EmailAddress" size="26" maxlength="100" name="EmailAddress" required style="width: 200px" />                        
                            <span class="hidden" id="js-email-validate" style="color: red">Please enter a valid Email.</span>                    
                            </td>                
                    </tr>         
                            
                    <tr class="Field">     

                        <th align="right" scope="row">Subject:*<br /></th>                    
                            <td>   

                            <input type="text" class="textbox-big" tabindex="11" required="" id="Subject" maxlength="400" name="Subject" required style="width: 200px" />                    
                            </td>                
                    </tr> 

                    <tr class="Field">
                        <th align="right" scope="row">Message:<br /></th>                    
                            <td>                        
                            <textarea class="textbox-multiline" tabindex="12" id="Comments" cols="60" rows="4" name="Comments" required></textarea>                    
                            </td>                
                    </tr>                                              

                    <tr>                    
                        <td>&nbsp;</td>

                        <td align="left" scope="row">                        
                            <div id="contact-us-buttons">                
                                <input type="submit" class="button-action" tabindex="14" id="ContactUsSubmitButton" value="Submit" name="" />            
                            </div>                    
                        </td>                
                    </tr> 

                </tbody>  
                </form>

Here is my ajax:

$.ajaxSetup({
    headers: {
        'X-CSRF-TOKEN': $('meta[name="csrf-token"]').attr('content')
    }
  });

$(document).ready(function(){
    $('#ContactUsSubmitButton').on('click',function(e){
        e.preventDefault();
        var FirstName = $('#FirstName').val().trim();
        var EmailAddress = $('#EmailAddress').val().trim();
        var Subject=$('#Subject').val().trim();
        var Message=$('#Comments').val().trim();
        

           
        if (FirstName.length==0 || EmailAddress.length==0 || Subject.length==0 || Message.length==0 ) {alert('Заполните все');}else{
            $.ajax({  
                     url:"/faq",  
                     method:"POST", 
                     dataType: "json",
                     data: {
                        'FirstName' : FirstName,
                        'EmailAddress' : EmailAddress,
                        'Subject' : Subject,
                        'Message' : Message

                     },
                     success:function(data){ 
                        alert(data);
                     },
                      cache: false,
                      contentType: false,
                      processData: false  
                  });
        }
                  

     });

});