SSL connect attempt failed, error 500 when trying to view changelog of updates and git clone a repository TLS error

Hello everyone,
1- Everything works fine when I update the repository list and upgrade all packages, but when I try to view the changelog, 50% of the time for the debian packages and 100% of the time for Proxmox enterprises packages, I get the error you can see in both screenshot. Looking at the changelog from the terminal with "apt changelog <packagename>" work fine for the debian ones, but it tells me they are unavailable for the Proxmox one.
Screenshot from 2021-02-10 12-37-38.pngScreenshot from 2021-02-10 12-38-10.png


2- When I try to git clone a repository from github in a VM to install a service, I get the following error: "gnutls_handshake() failed: The TLS connection was non-properly terminated".

I think both of those issue are related. I already looked at the firewall, it's not blocking any HTTPS traffic, and when I look at the firewall log, I can see that only the request for changelog that are successful appear in the log (the firewall is logging 100% of the traffic), and all request for github appear in the log.
I downloaded "links" in the same VM I got the git clone error, and was able to browse the same URL I wanted to git clone without error.

Thanks for helping me,
Olivier
 

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