Why won't RedBeanPhp connect?

Question

PHP

I am making a web application and when displaying the order form in phpmyadmin it gives a similar error

Fatal error: Uncaught PDOException: Could not connect to database (payment). in C:\WebServer\OpenServer\domains\localhost\inc\rb.php:858 Stack trace: #0 C:\WebServer\OpenServer\domains\localhost\inc\rb.php(684): RedBeanPHP\Driver\RPDO- >connect() #1 C:\WebServer\OpenServer\domains\localhost\inc\rb.php(882): RedBeanPHP\Driver\RPDO->runQuery('INSERT INTO `or...', Array) #2 C :\WebServer\OpenServer\domains\localhost\inc\rb.php(919): RedBeanPHP\Driver\RPDO->GetAll('INSERT INTO `or...', Array) #3 C:\WebServer\OpenServer\domains \localhost\inc\rb.php(3547): RedBeanPHP\Driver\RPDO->GetOne('INSERT INTO `or...', Array) #4 C:\WebServer\OpenServer\domains\localhost\inc\rb. php(4976): RedBeanPHP\Adapter\DBAdapter->getCell('INSERT INTO `or...', Array, 0) #5 C:\WebServer\OpenServer\domains\localhost\inc\rb.php(5103):

Answer 1

The parameters for accessing the database server are incorrect, or the database server is not working.
PS What does phpmyadmin have to do with it?