magento2.4.2 – How to resolve field parse error with Elasticsearch filters?

I am getting the error for the below code.

public function apply(MagentoFrameworkAppRequestInterface $request)
    {
        $filter = $request->getParam($this->_requestVar);
        if (!$filter || is_array($filter) ) {
            return $this;
        }

        $this->appliedFilter = $filter;
        $filters = explode(',', $filter);

        if (!$this->filterPlus) {
            $this->filterPlus = true;
        }

        $attribute = $this->getAttributeModel();
        $productCollection = $this->getLayer()->getProductCollection();
        // apply filtter to collection
        $productCollection->addFieldToFilter($attribute->getAttributeCode(), ("finset" => $filters));

        foreach ($filters as $option) {
            $text = $this->getOptionText($option);
            if ($option && strlen($text)) {
                $this->getLayer()->getState()->addFilter(
                    $this->_createItem($text, $option)
                );
            }
        }

        return $this;
    }

The error is,

main.CRITICAL:
{“error”:{“root_cause”:({“type”:”x_content_parse_exception”,”reason”:”(1:263)
(terms_lookup) unknown field
(finset)”}),”type”:”x_content_parse_exception”,”reason”:”(1:272)
(bool) failed to parse field
(must)”,”caused_by”:{“type”:”x_content_parse_exception”,”reason”:”(1:263)
(terms_lookup) unknown field (finset)”}},”status”:400}
{“exception”:”(object)
(ElasticsearchCommonExceptionsBadRequest400Exception(code: 400):
{“error”:{“root_cause”:({“type”:”x_content_parse_exception”,”reason”:”(1:263) (terms_lookup) unknown field
(finset)”}),”type”:”x_content_parse_exception”,”reason”:”(1:272)
(bool) failed to parse field
(must)”,”caused_by”:{“type”:”x_content_parse_exception”,”reason”:”(1:263)
(terms_lookup) unknown field (finset)”}},”status”:400} at
/opt/magento/public_html/vendor/elasticsearch/elasticsearch/src/Elasticsearch/Connections/Connection.php:632)”}
()

This usually happens with multi values filter. For example,

?filter_operating_sys=501,503

The Elasticsearch version is 7.13.2 and Magento version is 2.4.2