Warning: Undefined variable $con in /NAS3/vhosts/OC34801/mamairie.ci/public_www/challenge.php on line 8

Fatal error: Uncaught TypeError: mysqli_query(): Argument #1 ($mysql) must be of type mysqli, null given in /NAS3/vhosts/OC34801/mamairie.ci/public_www/challenge.php:8 Stack trace: #0 /NAS3/vhosts/OC34801/mamairie.ci/public_www/challenge.php(8): mysqli_query() #1 {main} thrown in /NAS3/vhosts/OC34801/mamairie.ci/public_www/challenge.php on line 8