Author Bio Section is Missing

My site is missing that author info section at the end of my posts. How can I make it appear?

The author bio section appears by default and there isn’t currently a setting to disable it.  Disabling it should require CSS code.  I suspect that there’s either some code from an old theme, custom CSS, or a plugin that is disabling this section.  You can try temporarily disabling your plugins and then clearing your site cache to see if this fixes it.  If so, re-enable your plugins one at a time and check.  That way you can figure out which one is blocking this section.  If it’s not a plugin, then there’s some code from the old theme or that was added at some point that’s preventing it from displaying.