Exception -> string(101) "SQLSTATE[HY000] [1045] Access denied for user 'topclinicnslaoui'@'10.11.20.114' (using password: YES)"

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<b>Notice</b>:  Undefined variable: PDO in <b>/home/topclinicn/www/shop/index.php</b> on line <b>9</b><br />
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<b>Fatal error</b>:  Uncaught Error: Call to a member function prepare() on null in /home/topclinicn/www/shop/index.php:9
Stack trace:
#0 {main}
  thrown in <b>/home/topclinicn/www/shop/index.php</b> on line <b>9</b><br />