404 error when clicking view post from published blog posts titles

This happens when I am in the admin menu and also when I am attempt to visit one of my blog posts by copying and pasting the URL and by simply clicking on the […] link from my website home page to read more, which should also take me to my blog posts. I am unsure of how long this has been going on. I only noticed it with the post I created yesterday. I tested all of my posts today and none of the links work. I am stumped and have never seen this before. I host, own, and maintain 7 wordpress sites on GoDaddy and have never had this happen before. I am unsure if this is a problem with my blog theme, database, or this latest version of wordpress. I am running 4.6.1. My webssite URL is https://www.donellevance.com. The blog posts can be clicked on from the home page. My theme is Zerif lite.