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Warning: Undefined variable $db in D:\docs_2\new22\pages\daftardokumen.php on line 4

Fatal error: Uncaught Error: Call to a member function query() on null in D:\docs_2\new22\pages\daftardokumen.php:4 Stack trace: #0 {main} thrown in D:\docs_2\new22\pages\daftardokumen.php on line 4