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<b>Warning</b>:  Undefined variable $query_2 in <b>/var/www/html/index.php</b> on line <b>334</b><br />
<br />
<b>Fatal error</b>:  Uncaught TypeError: fetchData(): Argument #2 ($sql) must be of type string, null given, called in /var/www/html/index.php on line 334 and defined in /var/www/html/includes/a_func.php:35
Stack trace:
#0 /var/www/html/index.php(334): fetchData()
#1 {main}
  thrown in <b>/var/www/html/includes/a_func.php</b> on line <b>35</b><br />