Init set empty db config if db config not found

www/configs/config.master.php

@@ -222,7 +222,17 @@ if ($is_secure) {
 }
 // define the db config set name, the db config and the db schema
 define('DB_CONFIG_NAME', $SITE_CONFIG[HOST_NAME]['db_host'] ?? '');
-define('DB_CONFIG', $DB_CONFIG[DB_CONFIG_NAME] ?? []);
+define('DB_CONFIG', $DB_CONFIG[DB_CONFIG_NAME] ?? [
+	'db_name' => '',
+	'db_user' => '',
+	'db_pass' => '',
+	'db_host' => '',
+	'db_port' => 5432,
+	'db_schema' => '',
+	'db_encoding' => '',
+	'db_type' => '',
+	'db_ssl' => ''
+]);
 // because we can't change constant, but we want to for db debug flag
 $GLOBALS['DB_CONFIG_SET'] = DB_CONFIG;
 // define('DB_CONFIG_TARGET', SITE_CONFIG[$HOST_NAME]['db_host_target']);

www/includes/admin_header.php

@@ -87,7 +87,7 @@ $l10n = new \CoreLibs\Language\L10n(
 	$locale['locale'],
 	$locale['domain'],
 	$locale['path'],
-	$locale['encoding']
+	$locale['encoding'],
 );
 
 // create smarty object