There was a problem connecting to the database.

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This is the detailed error:

Connection failed: could not find driver

There was a problem connecting to the database.

Are you sure that the database connection information is correct?

This is the detailed error:

Connection failed: could not find driver
Fatal error: Uncaught Error: Call to a member function query() on null in C:\inetpub\wwwroot\subsplus\lib\SubjectsPlus\Control\Querier.php:78 Stack trace: #0 C:\inetpub\wwwroot\subsplus\control\includes\functions.php(904): SubjectsPlus\Control\Querier->query('SELECT distinct...') #1 C:\inetpub\wwwroot\subsplus\subjects\databases.php(92): getLetters('databases', 'All', '', true) #2 {main} thrown in C:\inetpub\wwwroot\subsplus\lib\SubjectsPlus\Control\Querier.php on line 78