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Magento Open Source 2.4.0 Upgrade Notes

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Issues:

'We can't find products matching the selection.'

Summary:

This error is shown on all category pages. No products are displayed.

Magento 2.4.0 - 'We can't find products matching the selection.'

Initial Thoughts:

Presumed upgrade or install of Elastic Search server.

Remediation

Install Elastic Search.

Solution Applied

Open terminal and run the following commands (These commands may vary depending on your server environment).

  1. First we need to install PGP key
    wget -qO - https://artifacts.elastic.co/GPG-KEY-elasticsearch | sudo apt-key add -
  2. sudo apt-get install apt-transport-https
  3. echo "deb https://artifacts.elastic.co/packages/7.x/apt stable main" | sudo tee /etc/apt/sources.list.d/elastic-7.x.list
  4. sudo apt-get update && sudo apt-get install elasticsearch
  5. sudo update-rc.d elasticsearch defaults 95 10
  6. sudo -i service elasticsearch start

To check if Elastic Search is running or not run
http://127.0.0.1:9200/ in browser and if you see below response then Elastic Search is running

{
"name" : "root",
"cluster_name" : "elasticsearch",
"cluster_uuid" : "ogkAKBNnTheVFrPs3Aw5Ug",
"version" : {
"number" : "7.8.1",
"build_flavor" : "default",
"build_type" : "deb",
"build_hash" : "b5ca9c58fb664ca8bf9e4057fc229b3396bf3a89",
"build_date" : "2020-07-21T16:40:44.668009Z",
"build_snapshot" : false,
"lucene_version" : "8.5.1",
"minimum_wire_compatibility_version" : "6.8.0",
"minimum_index_compatibility_version" : "6.0.0-beta1"
},
"tagline" : "You Know, for Search"
}

What is Elastic Search

Elastic Search is a powerful search engine that can be installed on a server. In the case of Magento, it mainly improves speed for product searching.



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