Issue with duplicate pages being created in search engines

Hi Everyone.

I’m facing an issue where pages are strangely duplicating in search engines but I’m unable to find these pages in the backend.

For example

original post : https://www.bluewidgets.com/how-to-install

Posts like this are appearing in the search engines

https://www.bluewidgets.com/how-to-install/page/201
https://www.bluewidgets.com/how-to-install/page/188
https://www.bluewidgets.com/how-to-install/page/22
https://www.bluewidgets.com/how-to-install/page/144

etc.

Does any have any idea what’s causing this?

Thanks for the help guys.

[Moderator Note: No bumping, thank you.]