if (trim($fields['name']) == '') {
            $this->_errors['name'] = __('This is a required field');
        } elseif (strpos($fields['name'], '\\') !== false) {
            $this->_errors['name'] = __('This field contains invalid characters') . ' (\\)';
        } elseif (!preg_match('/^\p{L}/u', $fields['name'])) {