Manual:$wgPageCreationLog

Details
Whether to maintain a log of new page creations, which can be viewed at Special:Log/create.

When set to true...

new page creations will be logged and users will be able to access Special:Log/create to see new page creations on your wiki.

When set to false (default)...

new page creations will not be logged and Special:Log/create will report "No matching items in log".