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Warning: mysqli_free_result() expects parameter 1 to be mysqli_result, boolean given in D:\inetpub\webs\sisoiit\e-learningsystem\include\database.php on line 75
Warning: mysqli_fetch_object() expects parameter 1 to be mysqli_result, boolean given in D:\inetpub\webs\sisoiit\e-learningsystem\include\database.php on line 72
Warning: mysqli_free_result() expects parameter 1 to be mysqli_result, boolean given in D:\inetpub\webs\sisoiit\e-learningsystem\include\database.php on line 75