I am working the most recent (and continuously up to date) model of WordPress on Nginx.
From time to time I get up to a web site stuffed with 404 errors. The repair is to enter the permalinks and simply save the settings on that web page. This usually fixes the difficulty for a day or so.
This was taking place to a different web site of mine on the identical server. It immediately stopped being a problem. My level right here is that not solely do I not know what’s inflicting it, however I am unable to even inform what’s fixing it.