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Fatal error: Uncaught mysqli_sql_exception: Access denied for user 'istiakri_mahtab1489'@'localhost' (using password: YES) in /home/shakils1/public_html/QuizApp/category/delete_category.php:16 Stack trace: #0 /home/shakils1/public_html/QuizApp/category/delete_category.php(16): mysqli_connect('localhost', 'istiakri_mahtab...', 'hosting1489', 'istiakri_my_dat...') #1 {main} thrown in /home/shakils1/public_html/QuizApp/category/delete_category.php on line 16