Ajax 500 (internal server error) laravel 7

I'm trying to toggle the state on and off with the toggle (checkbox) with ajax but I'm getting error 500 (internal server error) and I have no idea why. I already put the token but the error is still there. What else can I do?

• Controller

    public function updateStatus(Request $request)
    {
        $profesor = Profesor::findOrFail($request->id)->update(['calificar' => $request->calificar]);

        if($request->calificar == 0)  {
            $newStatus = '<br> <button type="button" class="btn btn-sm btn-danger">Inactiva</button>';
        }else{
            $newStatus ='<br> <button type="button" class="btn btn-sm btn-success">Activa</button>';
        }
    
        return response()->json(['var'=>''.$newStatus.'']);
     }

• View

<meta name="csrf-token" content="">

<label class="switch">
      <input data-id="" class="mi_checkbox" type="checkbox" data-token=""
             data-onstyle="success" data-offstyle="danger" data-toggle="toggle" data-on="Active"
             data-off="InActive" >
      <span class="slider round"></span>
</label>

-ajax

$.ajaxSetup({
  headers: {
    'X-CSRF-TOKEN': $('meta[name="csrf-token"]').attr('content')
  }
});
 
$('.mi_checkbox').change(function() {
    //Verifico el estado del checkbox, si esta seleccionado sera igual a 1 de lo contrario sera igual a 0
    var estatus = $(this).prop('checked') == true ? 1 : 0; 
    var id = $(this).data('id'); 
        console.log(estatus);
    $.ajax({
        type: "GET",
        dataType: "json",
        url: 'StatusProfesor',
        data: {'calificar': estatus, 'id': id},
        success: function(data){
            $('#resp' + id).html(data.var); 
            console.log(data.var)
         
        }
    });

      
});

In the console the values ​​are changing fine, from 1 to 0, but this error still appears and nothing is updated in the database.