INNER JOIN MySQL

[Smorn activo]

I am the beginner of the PHP/MySQL developer. This is my codes

<?php
include('config.php');

/*
stock_table1 BARCODE,NAME

stock_table3 BILL_NO,BARCODE

*/

$sql = "select
stock_table3.BILL_NO,
stock_table3.BARCODE,
stock_table1.BARCODE,
stock_table1.NAME
from stock_table3
INNER JOIN stock_table1
ON stock_table3.BARCODE = stock_table1.BARCODE";

$dbquery = mysqli_query($connect,$sql);
while ($result = mysqli_fetch_array($dbquery, MYSQLI_ASSOC))
{
$BARCODE = $result["BARCODE"];
$NAME = $result["NAME"];
echo "$BARCODE $NAME <br />";
}
?>

<!----
#Engined by
Apache Web Server Version 2.4.25
PHP Script Language Version 5.6.30
MySQL Database Version 5.7.17

#display

Warning: mysqli_fetch_array() expects parameter 1 to be mysqli_result, boolean given in C:\....... line 24
[$result = mysqli_fetch_array($dbquery, MYSQLI_ASSOC)]

What is it wrong ?

Big Thank

---->