My Linux Systems can’t establish SSL connection in CLI [closed]

I have multiple Linux systems in my home. (2 Ubuntu System, 1 Debian System) Today, I got bummed while installing the Joplin Notes app. When I try to use wget or curl to download the bash file from a public website with no SSL issue(github).

All I get is an error saying wget or curl can’t establish SSL connections.

When I tried to troubleshoot the issue, most post claims it’s an issue about a missing CA file. However, I neither touched my CA files. nor do I face any SSL issue when I try to visit the sites from my browser.

I am really clueless about it. Since then I’ve tried downloading stuff with curl and wget from multiple sources and getting the same error.

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