phpmyadmin Fatal error: Uncaught Error: Call to a member fun

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How to fix this .....

Fatal error: Uncaught Error: Call to a member function exists() on null in C:\xampp\phpMyAdmin\libraries\classes\DatabaseInterface.php:1544 Stack trace: #0 C:\xampp\phpMyAdmin\libraries\classes\DatabaseInterface.php(2477): PhpMyAdmin\DatabaseInterface->postConnectControl() #1 C:\xampp\phpMyAdmin\libraries\common.inc.php(358): PhpMyAdmin\DatabaseInterface->connect(257) #2 C:\xampp\phpMyAdmin\index.php(26): require_once('C:\\xampp\\phpMyA...') #3 {main} thrown in C:\xampp\phpMyAdmin\libraries\classes\DatabaseInterface.php on line 1544