vsbridge indexer not running on product update and category update

[aarya-404]

Magento ver. 2.2.8
Elasticsearch: 5.6.11

I have installed " magento2-vsbridge-indexer " module by composer and followed the doc and set Magento indexer to "UPDATE ON SAVE" but on product edit/update indexer not updating the product data into Elasticsearch automatically

I have already setup the Magento cron.

when running these indexers by bin/magento indexer:reindex then Elasticsearch product data completely flushed

• also can you please give the path of log file when magento cron run on update/save any product?

Here I attracted the setting of this module.