Forum Discussion
Can't Activate SharePoint Server Publishing Infrastructure for Site Collection
You are unable to do this for various reasons, the first being that scripting is disabled in the Modern UI. It is not recommended to enable publishing in Modern for multiple reasons, one being that Modern UI doesn't support MasterPages/page layouts.
I would think about avoiding mixing classic ui and modern ui, as it is going to give your end users a very inconsistent experience navigating between modern and classic pages. I would think about seeing if you can create similar functionality in Modern without using classic. If you cannot, I would create a classic SharePoint site instead for the wiki purposes.
I don't understand you properly. I am using a classic version of the SharePoint Site and having the same technical issue, any suggestions.
cheers
Pratibha_vinayak Your issue may be unrelated, since you are in a classic site collection. I'm not sure what your issue may be.
Thanks for replying. I just attached the detail of error if you can find something.
details:
https://bigsaveconz.sharepoint.com/sites/Communication/_layouts/15/ManageFeatures.aspx?Scope=Site#