Pritunl-Client-installation on "Linux Mint 21.3 "Virginia"" fails

Hey Friends,

for the Linuxversion Above I tried to install Pritunl. As far as I see, I should install it like on a “Ubuntu 22.04”-Machine. So I followed the instruction on Repositories accordingly, but it failed with the Output down there.
Could it be, that the Package is not available in the Moment for some Update?
If it is not availabe there, is it available from a different source?

Thanks for an Idea, if someone has. :wink:

Kind regards
Williw

Miss:11 https://repo.pritunl.com/stable/apt Jammy Release
404 Not Found [IP: 2606:4700:20::681a:ec2 443]
Reading package lists… Done
E: The depot “https://repo.pritunl.com/stable/apt Jammy Release” does not contain a release file.
N: Updating from such a depot cannot be done in a secure way, so it is default disabled.
N: Further details on the creation of package depots and their user configuration can be found in the manual page apt-secure(8).
Reading package lists… Done
Building dependency tree… Read
Reading status information… Done
Package pritunl-client-electron is not available, but is referenced by another package. This may mean that the package is missing, has been superseded, or is only available from a different source.

The GUI client is only built for Ubuntu 24.04, 25.04 and 25.10.