PHP Fatal Error: mysqli_query() Argument #1 Must Be of Type mysqli, Null Given

[CLINTONPAU]

After following the installation steps for the NConf application, I'm encountering a mysqli_query() error. The application shows a "Setup required" message, and upon clicking to install NConf, the page is blank. The Apache error log displays the following error:

PHP Fatal error: Uncaught TypeError: mysqli_query(): Argument #1 ($mysql) must be of type mysqli, null given in /var/www/html/nconf/include/functions.php:1026
Additional Information:

The mysqli_query() function is throwing an error because the argument $mysql is null.
The issue persists despite ensuring the Apache user ownership and appropriate permissions for the nconf directory.
Database configuration and file renaming steps have been completed as outlined.

[garadar]

Hi @CLINTONPAU,

Do you have more details about what you are trying to do ?