The feature being activated is a Site scoped feature which has a dependency on a Site Collection scoped feature which has not been activated. Please activate the following feature before trying again: SharePoint Server Publishing Infrastructure f6924d36-2fa8-4f0b-b16d-06b7250180fa

Some times while activating the Publishing feature in SharePoint through the options in Site Settings we will get this error:
The feature being activated is a Site scoped feature which has a dependency on a Site Collection scoped feature which has not been activated. Please activate the following feature before trying again: SharePoint Server Publishing Infrastructure f6924d36-2fa8-4f0b-b16d-06b7250180fa

Reason:

The reason being the "SharePoint Server Publishing Infrastructure" feature has to be enabled at SITE COLLECTION level, then it has to be activated at SITE LEVEL enable the feature. So that we can create Publishing pages in SharePoint.

Solution:
It can be done in many ways (2 ways mentioned below):
1. We can use the Site Settings -> Site Collection Administration -> Site Collection Features to enable this feature.
2. Then Site Settings -> Site Administration -> Site Features -> Enable this feature.
3. We can also achieve this using STSADM command as shown below:

STSADM.EXE -o deactivatefeature -id f6924d36-2fa8-4f0b-b16d-06b7250180fa -url "http://SiteURLHere/" -force

Then,

STSADM.EXE -o activatefeature -id f6924d36-2fa8-4f0b-b16d-06b7250180fa -url "SiteURLHere" -force

Hope this helps you!