If all your browsers are redirecting attempts to visit the site with similar error redirects to 127.0.0.1, it indicates something at your system level or your DNS look-up service is routing the connection attempts into your computer's 'local host' address rather than the IP address of the website.
The way it works is that when you attempt to visit an http or https website, that textual address must be converted into a numerical IP address (Internet Protocol) actually used to access sites on the Internet, a limited number of which IPs are dedicated by protocol purely to connect to local functions resident on the computer or its local network (such as 127.0.0.1). The look-up first occurs via your computer's own hosts file to see if there are any relevant URL conversions listed there, if not then your system/browser automatically consults the look-up listings in a specified DNS server out on the web. That DNS server will be either a default one from your provider or a user-defined one you've specified to the system. Once your system has retrieved the listed IP number for the URL you've entered, it attempts to make the actual connection to that IP.
If you are being directed to 127.0.0.1, it implies that either your browsers are being redirected by the computer's hosts file or a DNS server to an internal computer address instead of the desired IP, or your system is somehow misconfigured to access the internal address whenever you attempt to go out on the Internet. Since all the browsers show the problem for the site, and since other websites can be accessed OK, the implication is that something is redirecting that one unique website address back to the 127.0.0.1 local address. Depending on how the software operates, that means there either is a DNS/hosts incorrect address listing or that the DNS server cannot find an IP entry for the URL you're attempting to visit. In the latter case, one usually receives an error message indicating a non-existent URL, rather than the redirection to 127.0.0.1.