As you can see the error 403 forbidden errorI have installed ubuntu 20.04 in VM virtual box. I need to install GNU Health on ubuntu. I have followed this article on Wikibooks. Here is the link to an article (https://en.wikibooks.org/wiki/GNU_Health/Installation#Installing_GNU_Health_on_GNU/Linux_and_FreeBSD). Everything was fine i installed all dependencies correctly and when I reached to GNU installation step following this command (bash ./gnuhealth-setup install). GNU is installed successfully but when it comes to installing the Tryton package it shows the error message (403..Forbidden Message) when i open the Tryton website it was fine but its link not working in the Terminal.
I have tried to follow this video on youtube but it is not working. https://youtu.be/ivGwM9y6YOk