«The "https://repo.magento.com/packages.json" file could not be downloaded: SSL operation failed with code 1. OpenSSL Error messages: error:14090086:SSL routines:ssl3_get_server_certificate:certificate verify failed»

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1

The readiness check is currently bugging me a lot.
The only error I have to resolve is this:

Command “update” failed: Loading composer repositories with package information

[Composer\Downloader\TransportException]
The “https://repo.magento.com/packages.json” file could not be downloaded: SSL operation failed with code 1. OpenSSL Error messages:
error:14090086:SSL routines:ssl3_get_server_certificate:certificate verify failed
Failed to enable crypto
failed to open stream: operation failed

Currently running: TLS 1.2 with ssl 3.1
Cannot change this due to shared hosting.

2

The same problem here

3

A solution is to disable the TLS by editing the composer.json and adding:

"config": {
    "disable-tls": true,
    "secure-http": false
}

This is a solution that works for shared webhosters.

4

This is not working for me on Magento 2.2.3 Do you how can i fix it?