I have a ERR 521 problem right after HTTPS activation on my website.
Before the activation of HTTPS, the website works fine, I just have a non secure connection at the URL bar.
But after getting the HTTPS to work on the website, I get Error 521.
As you can see, the website is just fine, running on Wordpress, PhP 7.4:
http://http://126.96.36.199/ is just fine.
Any clue on what’s causing this error?