Erro na conexão: could not find driver
?>
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<b>Notice</b>:  Undefined variable: pdo in <b>C:\Apache24\htdocs\sistema\autenticar.php</b> on line <b>10</b><br />
<br />
<b>Fatal error</b>:  Uncaught Error: Call to a member function prepare() on null in C:\Apache24\htdocs\sistema\autenticar.php:10
Stack trace:
#0 {main}
  thrown in <b>C:\Apache24\htdocs\sistema\autenticar.php</b> on line <b>10</b><br />