My site is two lingual (Persian and English), there is too many error in event log (8 error in one second with different link!)

Advanced Friendly URL Provider Duplicate URL Warni:Page Naming Conflict Duplicate Page Details:Page naming conflict. Url of (iranchef.com/advertising/) resolves to two separate pages (تبلیغات [//دربارهایرانشف//تبلیغات] [tabid = 117], advertising [//aboutiranchef//advertising] [tabid = 139]). Only the second page will be shown for the url. Warning Information:PLEASE NOTE : this is an information message only, this message does not affect site operations in any way. Suggested Action:Rename one or both of the pages to ensure a unique URL Hide this message:To stop this message from appearing in the log, uncheck the option for 'Produce an Exception in the Site Log if two pages have the same name/path?' in the Advanced Url Rewriting settings. Thread Id:44 Server Name: Server2120

all of URLs redirect to advertising

any idea please?