Hi @Rahim Molvani,
As per my knowledge, this error is caused by the URL is crawled by other content sources. You can go to Crawl log and select URL view, search for that URL to check if it is included in other content sources.
Please let me know the result. Thanks:)
If the answer is helpful, please click "Accept Answer" and kindly upvote it. If you have extra questions about this answer, please click "Comment".
Note: Please follow the steps in our documentation to enable e-mail notifications if you want to receive the related email notification for this thread.