Lost Password Page Error

Almost of this issue happen because conflict with 3rd party plugin or snippet to change default WP Admin / WP Login URL.

Please remove the snippet / plugin and to hide your default WP Admin URL, please use this CSS

https://gist.github.com/KaineLabs/577d094c67e585729da12cdddde9ffb8

On the line 17 line, please change

'add-your-custom-login-page-url-here';

with your login page URL

To know where you have to put the snippet, please check this article

https://kainelabs.ticksy.com/article/17309/