What are common issues with accessing special admin pages in MediaWiki installations?

Common issues with accessing special admin pages in MediaWiki installations include permission errors, incorrect configuration settings, or missing extensions. To solve this, ensure that the user has the necessary permissions to access admin pages, check the LocalSettings.php file for any misconfigurations, and make sure that all required extensions are properly installed and enabled.

// Check user permissions to access admin pages
if ( !$wgUser->isAllowed( 'delete' ) ) {
    die( 'You do not have permission to access this page.' );
}

// Check LocalSettings.php for any misconfigurations
if ( !isset( $wgGroupPermissions['sysop']['delete'] ) ) {
    die( 'Permission not set in LocalSettings.php' );
}

// Check for required extensions
if ( !ExtensionRegistry::getInstance()->isLoaded( 'MyExtension' ) ) {
    die( 'MyExtension is not installed or enabled.' );
}