Warning: Undefined variable $db in /home/site4admin/public_html/inc/fetch.php on line 201

Fatal error: Uncaught Error: Call to a member function query() on null in /home/site4admin/public_html/inc/fetch.php:201 Stack trace: #0 /home/site4admin/public_html/invoice/manage.php(7): include() #1 {main} thrown in /home/site4admin/public_html/inc/fetch.php on line 201