При вводе слова на русском, выдается ошибка "mysqli_num_rows() expects parameter 1 to be mysqli_result, boolean given"

<?php
//fetch.php
$connect = mysqli_connect("localhost", "root", "", "spis");
$output = '';
if(isset($_POST["query"]))
{
 $search = mysqli_real_escape_string($connect, $_POST["query"]);
 $query = "
  SELECT * FROM catalog 
  WHERE id LIKE '%".$search."%'
  OR category LIKE '%".$search."%' 
  OR country LIKE '%".$search."%' 
  OR sum LIKE '%".$search."%' 
  OR com LIKE '%".$search."%'
  OR date LIKE '%".$search."%'
 ";
}
else
{
 $query = "
  SELECT * FROM catalog ORDER BY id
 ";
}
$result = mysqli_query($connect, $query) or trigger_error(mysql_error()." in ". $sql);
if(mysqli_num_rows($result) > 0)
{
 $output .= '
  <div class="table-responsive">
   <table class="table table bordered">
    <tr>
      <th><a class="column_sort" id="id" data-order="'.$order.'" href="#">ID</a></th>  
           <th><a class="column_sort" id="category" data-order="'.$order.'" href="#">Категория</a></th>  
           <th><a class="column_sort" id="country" data-order="'.$order.'" href="#">Валюта</a></th>  
           <th><a class="column_sort" id="sum" data-order="'.$order.'" href="#">Сумма</a></th>  
           <th><a class="column_sort" id="com" data-order="'.$order.'" href="#">Комментарий</a></th>
 
    </tr>
 ';
 while($row = mysqli_fetch_array($result))
 {
  $output .= '
   <tr>
    <td>'.$row["id"].'</td>
    <td>'.$row["category"].'</td>
    <td>'.$row["country"].'</td>
    <td>'.$row["sum"].'</td>
    <td>'.$row["com"].'</td>
 
   </tr>
  ';
 }
 echo $output;
}
else
{
 echo 'Data Not Found';
}
 
?>