Can't Edit SharePoint 2013 site page

Hello Folks,

I had tried to edit the SharePoint site page by clicking the Edit button under settings wheel, however it didn't gone to edit mode.

I tried to find the solution in site settings page, however I didn't find any solution.
Then, I found 1 article from "Mayank Chavan" where he said to check-out the site page.

Solution:
You need to first checkout the page then try "Edit Page".

Navigate to Site Settings -> Site Content -> Site Pages -> Click on "..." next to page name -> Click on "Check out" ->

Now when you "Edit page" it will work. Once done with editing please make sure to Check In the page.

Thanks,
Sandeep