wp-admin/widgets.php Not Working

I have no functionality in my wp-admin/widgets.php, and for some reason, my site has gone from 2 sidebars to one with only the wp basic widgets shown on the actual website. widgets.php shows no widgets in any of the widget areas. I cannot drag and drop or use it in accessibility mode. My site has been up and running fine for 2 weeks! I tried deactivating all plugins, but it was still not working. I have added a new post and a new page today, but that should not affect my widgets?! Lord, God, please help! BTW, I live in flooded Nashville, TN, the New Atlantis, if it helps get me some sympathetic help with this issue! I’m trying to get some flood info out there! Thanks!