The site webapp is not running, and i get the error in the logs

Unable to invalidate cache with request '/_invalidate-images/test/_resources-images/images' to server 'localhost', response: HTTP/1.1 404 Introuvable

Problem is, I get a popup message telling that the file upload failed. But when I refresh the tool (conrtent or page attachements, or event resources explorer), I can see the file uploaded.