WordPress backend (pages, media) deleted

I had a customized site using Customizr Child Theme. Everything looked great. I had to reinstall MAMP on my local server and since then, my site disappeared. I cannot seem to figure out why. The contents of htdocs and db have not changed.

In my Dashboard – none of my pages, menus, or media are present though my custom css is being used. Could this issue be related to my username?