Blocking websites using terminal doesn't work anymore

Hi guys

I've been using Terminal to block websites for some time now, but it has stopped working recently. I tried following the procedure that I had used before (typing sudo nano /etc/hosts in Terminal, typing '127.0.0.1 www.website.com' and '127.0.0.1 site.com' in the host file, saving, and typing sudo 'dscacheutil -flushcache' in the terminal) with new websites, but it doesn't work.

I tried entering 'sudo killall -HUP mDNSResponder' instead of 'sudo dscacheutil -flushcache', but that didn't work.

I tried entering 000.0.0.0 instead of 127.0.0.1, but that didn't work.

I tried saving the host file to desktop, modifying it there, and then saving it to it's original location again, but that didn't work

Here you can see my host file:

I also tried adding 'fe80::1%1o0 localhost' behind '::1 localhost' in the host file, since I saw some comment on this forum, saying that it should be there, but that didn't change my website-blockage problems.

Any suggestions will be happily received.

I have a macMojave - 10.14.5

Cheers, Jóhann Örn