fix: fixes 'Fatal Error on Empty Redis Port Setting' bug

Author: Pathan-Amaankhan

admin/partials/nginx-helper-general-options.php

@@ -61,14 +61,21 @@
 
     $site_options = get_site_option( 'rt_wp_nginx_helper_options', array() );
 
-    // Uncheck checkbox fields whose default value is `1` but user has unchecked.
     foreach ( $nginx_helper_admin->nginx_helper_default_settings() as $default_setting_field => $default_setting_value ) {
 
+	    // Uncheck checkbox fields whose default value is `1` but user has unchecked.
         if ( 1 === $default_setting_value && isset( $site_options[ $default_setting_field ] ) && empty( $all_inputs[ $default_setting_field ] ) ) {
 
 	        $nginx_settings[ $default_setting_field ] = 0;
 
         }
+
+        // Populate the setting field with default value when it is empty.
+	    if ( '' === $nginx_settings[ $default_setting_field ] ) {
+
+		    $nginx_settings[ $default_setting_field ] = $default_setting_value;
+
+	    }
     }
 
 	if ( ( ! is_numeric( $nginx_settings['log_filesize'] ) ) || ( empty( $nginx_settings['log_filesize'] ) ) ) {