Fatal error: Uncaught TypeError: mb_strtolower() expects parameter 1 to be string phpmyadmin mysql error

  mysql, php, phpmyadmin, xampp

PhpMyAdmin causes error while executing a query from the phpmyadmin side

SELECT * FROM users u 
    INNER JOIN address a ON u.userid=a.id
    INNER JOIN  health_status h ON u.userid=h.uid
    WHERE u.userid='1634627411'

the error:

Fatal error: Uncaught TypeError: mb_strtolower() expects parameter 1 to be string, null given in /Applications/XAMPP/xamppfiles/phpmyadmin/libraries/classes/Display/Results.php:3095 Stack trace: #0 /Applications/XAMPP/xamppfiles/phpmyadmin/libraries/classes/Display/Results.php(3095): mb_strtolower(NULL) #1 /Applications/XAMPP/xamppfiles/phpmyadmin/libraries/classes/Display/Results.php(2772): PhpMyAdminDisplayResults->getRowInfoForSpecialLinks(Array, Array) #2 /Applications/XAMPP/xamppfiles/phpmyadmin/libraries/classes/Display/Results.php(2613): PhpMyAdminDisplayResults->getRowValues(Object(mysqli_result), Array, 0, Array, Array, ”, Array, ‘SELECT * FROM u…’, Array) #3 /Applications/XAMPP/xamppfiles/phpmyadmin/libraries/classes/Display/Results.php(4219): PhpMyAdminDisplayResults->getTableBody(Object(mysqli_result), Array, Array, Array, false) #4 /Applications/XAMPP/xamppfiles/phpmyadmin/libraries/classes/Sql.php(1364): PhpMyAdminDisplayResults->getTable(Object(mysqli_result), Array, Array, false) #5 /Application in /Applications/XAMPP/xamppfiles/phpmyadmin/libraries/classes/Display/Results.php on line 3095

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Source: Ask PHP

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