How to change the WordPress error page - "There has been a critical error on this website....."

Question

I wish to change the text and link for the standard error page as shown below. And maybe change the design too.

Is it possible?

Answer 1

I managed to do it thanks to @user2355051!

I'm just paraphrasing what he/she said. Create a PHP file named php-error.php in your wp-content folder.

Code it with basic HTML (really, a pure HTML page) and your error page is reborn!