Scroll Bar Not Working

Hi everyone,
In my project where I use smartstore, the scrollbar is not working since today morning. On many sites using smartstore and smartstore.com, the scroll bar does not work when I visit it via chrome. What could be the cause of the problem.

Hello again.
I solved the problem. I'll share it for anyone who might have the same problem. I was using ahref.com to monitor the seo values ​​of the project. And the chrome extension was installed. The class named 'ellipsis' here conflicted with the project and this canceled the scroll. Deleting the plugin solved the problem.