medusa: Backend return `addDocuments must be overridden by a child class` when use medusa-plugin-meilisearch@2.0.6

Bug report

Describe the bug

When I was using the medusajs-plugin-meilisearch plugin in medusajs which I followed from the following tutorial https://docs.medusajs.com/plugins/search/meilisearch, I noticed that the products I added or updated were not found on my meilisearch server.

When I open the medusa backend, it says “Processing product. created which has 0 subscribers”. And when I do the same thing described from https://github.com/medusajs/medusa/issues/3964#issuecomment-1529700523, I run insert into staged_job (id, event_name, data) values ('some_id', ' SEARCH_INDEX_EVENT', '{}') generates “info: Processing SEARCH_INDEX_EVENT which has 1 subscriber warn: This is an empty method: addDocuments must be overridden by a child class”

System information

Medusa version (including plugins): "dependencies": { "@medusajs/admin": "^2.0.2", "@medusajs/cache-inmemory": "^1.8.2", "@medusajs/cache-redis": "1.8.0", "@medusajs/event-bus-local": "^1.8.2", "@medusajs/event-bus-redis": "1.8.0", "@medusajs/medusa": "1.8.1", "@medusajs/medusa-cli": "^1.3.10", "@medusajs/utils": "^1.8.2", "aws-sdk": "^2.1370.0", "axios": "^1.4.0", "cors": "^2.8.5", "joi": "^17.8.3", "medusa-core-utils": "^1.1.39", "medusa-file-minio": "^1.1.5", "medusa-file-s3": "^1.1.11", "medusa-file-spaces": "^1.3.6", "medusa-fulfillment-manual": "^1.1.31", "medusa-interfaces": "^1.3.7", "medusa-payment-manual": "^1.0.16", "medusa-payment-stripe": "^1.1.45", "medusa-plugin-meilisearch": "^2.0.6", "multer": "^1.4.5-lts.1", "multer-s3": "^3.0.1", "typeorm": "0.3.11" }, Node.js version: v16.15.0 Database: postgre Operating system: Windows 11 Browser (if relevant):

Steps to reproduce the behavior

1. Create some products in medusa admin
2. Try to find that’s product in your meilisearch server
3. Or you can find with postman

Expected behavior

Every time there is an addition or change to a product in the Medusa admin, the product should also be sent to the meilisearch server which was set up earlier.

Screenshots