How to solve the problem with dpkg?

Question

Debian

In general, the essence is this, a simple task was set to put secretnet on Linux Astra, the first error is that when downloading the demo package via wget, error 500 got out, I bypassed it by downloading the archive to my mint and using lamp using wget downloaded from my computer, but here's a new problem when executing dpkg -i sn.deb we get error 1, not that I'm not looking for a fix, just browsing 8 pages in the hum. doing all the recommendations did not help me ... Maybe Astra is just something different from Debian and ubuntu?